Updated on 2023/02/05

写真a

 
IZUMIKAWA Takuji
 
Organization
Institute for Research Promotion Center for Coordination of Research Facilities Associate Professor
Title
Associate Professor
External link

Degree

  • 博士(理学) ( 1999.6   大阪大学 )

Research Interests

  • 格子欠陥

  • 原子核構造

  • Lattice Defect

  • Nuclear Structure

Research Areas

  • Natural Science / Semiconductors, optical properties of condensed matter and atomic physics

  • Natural Science / Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics

Research History

  • Niigata University   Institute for Research Promotion Center for Coordination of Research Facilities   Associate Professor

    2017.2

  • Niigata University   Radioisotope Center   Associate Professor

    2007.4 - 2017.1

  • Niigata University   Associate Professor (as old post name)

    2004.5 - 2007.3

  • Niigata University   Research Assistant

    1996.9 - 2004.5

Education

  • Osaka University   理学研究科   物理学専攻

    - 1996

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    Country: Japan

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  • Tokyo University of Science   理学部   物理学科

    - 1989

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    Country: Japan

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Professional Memberships

 

Papers

  • Development of a small Beta-NMR system using Halbach Array permanent magnet

    Y. Kimura, M. Mihara, K. Matsuta, M. Fukuda, Y. Otani, G. Takayama, T. Izumikawa, N. Noguchi, M. Ogose, M. Sato, K. Takatsu, T. Ohtsubo, H. Takahashi, S. Momota, H. Okumura, T. Moriguchi, A. Ozawa, A. Kitagawa, S. Sato

    Hyperfine Interactions   243 ( 1 )   2022.12

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    Publishing type:Research paper (scientific journal)  

    We have developed a new and compact β-nuclear magnetic resonance (NMR) system using beta-radioactive nuclei. By using a Halbach array permanent magnet to create a static magnetic field, and a scintillating fiber as a detector, we succeeded in significantly reducing the size and weight of the entire system. The performance of the new spectrometer was tested and evaluated by observing an NMR spectrum of 19O (T1/2 = 26.9 s, I = 5/2) in TiO2.

    DOI: 10.1007/s10751-021-01789-5

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  • One-Neutron Removal Cross Sections for <sup>16</sup> N Isomeric State

    M. Fukutome, M. Fukuda, M. Tanaka, D. Nishimura, M. Takechi, T. Ohtsubo, M. Mihara, K. Matsuta, T. Suzuki, T. Yamaguchi, T. Izumikawa, S. Sato, S. Fukuda, A. Kitagawa, H. Takahashi, Y. Kimura, S. Sugawara, K. Takatsu, G. Takayama

    Few-Body Systems   63 ( 2 )   2022.6

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    It is well known that the enhancement of halo neutron removal cross sections in neutron halo nuclei. This is one of the evidence for the neutron halo structure. Because the valence neutron of the isomeric state in 16N is considered to be mainly occupying in the s-orbital, we studied the nuclear structure of 16N as a candidate for neutron halo nucleus. In this study, we measured one-neutron removal cross sections σ-1n using secondary beams of 16N with a mixture of ground and isomeric states. We used two types of primary beams, 15N and 18O, to produce 16N beams with different isomeric ratios (8.7, 24.2a 16N beam with a large isomeric ratio is large compared to that obtained with another beam with a small isomeric state. This result suggests that the 16N isomeric state is considered to have a neutron-halo-like structure.

    DOI: 10.1007/s00601-021-01721-1

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  • High-resolution beta-NMR of short-lived spin-1/2 nucleus N-17 implanted into water

    Mototsugu Mihara, Yurika Otani, Yoko Kimura, Ryo Wakabayashi, Norihide Noguchi, Mizuki Ogose, Takuji Izumikawa, Hiroyuki Takahashi, Misa Sato, Kazuya Takatsu, Gen Takayama, Sadao Momota, Hiroyuki Okumura, Mitsunori Fukuda, Miki Fukutome, Daiki Nishimura, Kensaku Matsuta, Tadanori Minamisono, Takashi Ohtsubo, Akira Ozawa, Takashi Nagatomo, Atsushi Kitagawa, Shinji Sato

    HYPERFINE INTERACTIONS   242 ( 1 )   2021.12

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:SPRINGER INT PUBL AG  

    Nuclear magnetic resonance (NMR) spectrum of the short-lived nucleus N-17 (I = 1/2, T-1/2 = 4.17s) in liquid water was measured by means of the beta-NMR technique to clarify the chemical species formed by nitrogen ions injected into water. We have improved the spectral resolution to 5ppm in the full width at half maximum which is about 1/40 times compared to the previous study. The shape of the obtained spectrum indicated that it may consist of multiple resonance lines rather than a single line. Some possibilities regarding the chemical states of nitrogen in water are discussed based on the present result.

    DOI: 10.1007/s10751-021-01773-z

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  • High-resolution β-NMR of short-lived spin-1/2 nucleus <sup>17</sup>N implanted into water

    Mototsugu Mihara, Yurika Otani, Yoko Kimura, Ryo Wakabayashi, Norihide Noguchi, Mizuki Ogose, Takuji Izumikawa, Hiroyuki Takahashi, Misa Sato, Kazuya Takatsu, Gen Takayama, Sadao Momota, Hiroyuki Okumura, Mitsunori Fukuda, Miki Fukutome, Daiki Nishimura, Kensaku Matsuta, Tadanori Minamisono, Takashi Ohtsubo, Akira Ozawa, Takashi Nagatomo, Atsushi Kitagawa, Shinji Sato

    Hyperfine Interactions   242 ( 1 )   2021.12

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    Nuclear magnetic resonance (NMR) spectrum of the short-lived nucleus 17N (I = 1/2, T1/2 = 4.17s) in liquid water was measured by means of the β-NMR technique to clarify the chemical species formed by nitrogen ions injected into water. We have improved the spectral resolution to 5ppm in the full width at half maximum which is about 1/40 times compared to the previous study. The shape of the obtained spectrum indicated that it may consist of multiple resonance lines rather than a single line. Some possibilities regarding the chemical states of nitrogen in water are discussed based on the present result.

    DOI: 10.1007/s10751-021-01773-z

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  • Application of spin polarized <sup>19</sup>O beam to the study of oxygen motion in solid oxide fuel cell materials

    Y. Otani, M. Mihara, K. Matsuta, M. Fukuda, R. Wakabayashi, N. Okimoto, M. Fukutome, Y. Kimura, G. Takayama, T. Izumikawa, N. Noguchi, M. Ogose, M. Sato, K. Takatsu, T. Ohtsubo, D. Nishimura, H. Takahashi, S. Sugawara, A. Gladkov, H. Ishiyama, A. Kitagawa, S. Sato, S. Momota, H. Okumura, T. Moriguchi, A. Ozawa, N. Kaname, A. Yano

    Hyperfine Interactions   242 ( 1 )   2021.12

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    The spin-lattice relaxation times T1 of an unstable nucleus 19O (T1/2 = 26.9 s, I = 5/2) implanted into Y2O3 stabilized ZrO2 (YSZ), which is a solid oxide fuel cell material, were measured at T = 278 − 333 K by means of the β-NMR technique, using a highly spin polarized 19O beam produced via the heavy ion reaction. The motional correlation times τc for oxygen motion derived from the T1 data are on the same straight line on the Arrhenius plot as those derived from the previous 17O-NMR data at above the room temperature. This indicates that 19O ions implanted into YSZ from outside seem to exhibit the same behavior as oxygen ions in the host YSZ material.

    DOI: 10.1007/s10751-021-01776-w

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  • Possibility to Employ Nucleon Pickup Cross Sections to Look into Nucleon Momentum Distributions in Nuclei

    M. Fukuda, N. Tadano, S. Yamaoka, M. Tanaka, J. Ohno, D. Nishimura, M. Takechi, R. Wakabayashi, H. Du, S. Fukuda, T. Izumikawa, N. Kanbara, Y. Kanke, A. Kitagawa, K. Matsuta, M. Mihara, S. Miura, S. Momota, D. Murooka, J. Nagumo, T. Ohtsubo, H. Oikawa, S. Sato, J. Shimaya, Y. Takeuchi, S. Suzuki, T. Suzuki, Y. Tanaka, T. Yamaguchi

    Proceedings of 13th International Conference on Nucleus-Nucleus Collisions   2020.7

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    Publishing type:Research paper (international conference proceedings)   Publisher:Journal of the Physical Society of Japan  

    DOI: 10.7566/jpscp.32.010044

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  • Beta-NMR of short-lived nucleus <sup>17</sup>N in liquids

    Mototsugu Mihara, Takanobu Sugihara, Mitsunori Fukuda, Akira Homma, Takuji Izumikawa, Atsushi Kitagawa, Kensaku Matsuta, Tadanori Minaisono, Sadao Momota, Takashi Nagatomo, Hiroki Nishibata, Daiki Nishimura, Kosuke Ohnishi, Takashi Ohtsubo, Akira Ozawa, Shinji Sato, Masaomi Tanaka, Ryo Wakabayashi, Shoichi Yagi, Rikuto Yanagihara

    Hyperfine Interactions   240 ( 1 )   2019.12

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    © 2019, Springer Nature Switzerland AG. The β-ray detected nuclear magnetic resonance (β-NMR) of a short lived-nucleus 17N (I = 1/2, T1/2 = 4.173 s) in liquid H2O and CH3NO2 has been performed. A π-pulse method was applied to obtain sharp NMR lines, from which the ratio of the Larmor frequencies of 17N in CH3NO2 and 1H was determined to be ν[17N in CH3NO2]/ν[1H2O] = 0.1265751 ± 0.0000019. Two resonance lines were observed for 17N in H2O with the relative frequency shifts of –(2.33 ± 0.37) × 10−4 and (2.91 ± 0.27) × 10−4 referenced to 17N in CH3NO2.

    DOI: 10.1007/s10751-019-1650-3

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  • New test of modulated electron capture decay of hydrogen-like Pm-142 ions: Precision measurement of purely exponential decay

    F. C. Ozturk, B. Akkus, D. Atanasov, H. Beyer, F. Bosch, D. Boutin, C. Brandau, P. Buehler, R. B. Cakirli, R. J. Chen, W. D. Chen, X. C. Chen, Dillmann, I, C. Dimopoulou, W. Enders, H. G. Essel, T. Faestermann, O. Forstner, B. S. Gao, H. Geissel, R. Gernhaeuser, R. E. Grisenti, A. Gumberidze, S. Hagmann, T. Heftrich, M. Heil, M. O. Herdrich, P-M Hillenbrand, T. Izumikawa, P. Kienl, C. Klaushofer, C. Kleffner, C. Kozhuharov, R. K. Knoebel, O. Kovalenko, S. Kreim, T. Kuehl, C. Lederer-Woods, M. Lestinsky, S. A. Litvinov, Yu A. Litvinov, Z. Liu, X. W. Ma, L. Maier, B. Mei, H. Miura, Mukha, I, A. Najafi, D. Nagae, T. Nishimura, C. Nociforo, F. Nolden, T. Ohtsubo, Y. Oktem, S. Omika, A. Ozawa, N. Petridis, J. Piotrowski, R. Reifarth, J. Rossbach, R. Sanchez, M. S. Sanjari, C. Scheidenberger, R. S. Sidhu, H. Simon, U. Spillmann, M. Steck, Th Stoehlker, B. H. Sun, L. A. Susam, F. Suzaki, T. Suzuki, S. Yu Torilov, C. Trageser, M. Trassinelli, S. Trotsenko, X. L. Tu, P. M. Walker, M. Wang, G. Weber, H. Weick, N. Winckler, D. F. A. Winters, P. J. Woods, T. Yamaguchi, X. D. Xu, X. L. Yan, J. C. Yang, Y. J. Yuan, Y. H. Zhang, X. H. Zhou

    PHYSICS LETTERS B   797   2019.10

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER  

    An experiment addressing electron capture (EC) decay of hydrogen-like Pm-142(60+) ions has been conducted at the experimental storage ring (ESR) at GSI. The decay appears to be purely exponential and no modulations were observed. Decay times for about 9000 individual EC decays have been measured by applying the single-ion decay spectroscopy method. Both visually and automatically analysed data can be described by a single exponential decay with decay constants of 0.0126(7) s(-1) for automatic analysis and 0.0141(7) s(-1) for manual analysis. If a modulation superimposed on the exponential decay curve is assumed, the best fit gives a modulation amplitude of merely 0.019(15), which is compatible with zero and by 4.9 standard deviations smaller than in the original observation which had an amplitude of 0.23(4). (C) 2019 The Author(s). Published by Elsevier B.V.

    DOI: 10.1016/j.physletb.2019.134800

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  • Neutron skin thickness of Ca isotopes

    Tanaka M., Aimaganbetov A. S., Amano M., Arakawa H., Bagchi S., Behr K. -H., Burtebayev N., Chikaato K., Du H., Fujii T., Fukuda N., Takechi M., Geissel H., Hori T., Hoshino S., Igosawa R., Ikeda A., Inabe N., Inomata K., Itahashi K., Izumikawa T., Kamioka D., Honma A., Kanda N., Kato I., Kenzhina I., Korkulu Z., Kuk Ye., Kusaka K., Matsuta K., Mihara M., Miyata E., Nagae D., Suzuki T., Nakamura S., Nassurlla M., Nishimuro K., Nishizuka K., Ohmika S., Ohnishi K., Ohtake M., Ohtsubo T., Ong H. J., Ozawa A., Tanaka Y., Prochazka A., Sakurai H., Scheidenberger C., Shimizu Y., Sugihara T., Sumikama T., Suzuki S., Suzuki H., Takeda H., Tanaka Y. K., Fukuda M., Tanihata I., Wada T., Wakayama K., Yagi S., Yamaguchi T., Yanagihara R., Yanagisawa Y., Yoshida K., Zholdybayev T. K., Nishimura D., Moriguchi T., Ahn D. S.

    Meeting Abstracts of the Physical Society of Japan   73 ( 0 )   365 - 365   2018

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    Language:Japanese   Publisher:The Physical Society of Japan  

    DOI: 10.11316/jpsgaiyo.73.1.0_365

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  • Neutron removal cross sections of neutron-rich light nuclei

    Fukuda M., Matsuta K., Honma A., Ikeda A., Kanda N., Chikaato K., Yamaguchi K., Tomita M., Mozumi K., Furihara M., Miyase T., Takechi M., Ohtsubo T., Suzuki T., Fujii T., Yokota K., Sakaue M., Yamaguchi T., Machida M., Izumikawa T., Fukuda S., Sato S., Ohnishi K., Kitagawa A., Nishimura D., Sugihara T., Yagi S., Mihara M., Kehl R., Tanaka M.

    Meeting Abstracts of the Physical Society of Japan   73 ( 0 )   367 - 367   2018

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    Language:Japanese   Publisher:The Physical Society of Japan  

    DOI: 10.11316/jpsgaiyo.73.1.0_367

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  • DEVELOPMENT OF HIGH RESOLUTION TOF DETECTOR FOR RI BEAMS USING CHERENKOV RADIATION

    E. Miyata, M. Takechi, T. Ohtsubo, M. Fukuda, D. Nishimura, K. Abe, K. Aoki, A. Ikeda, T. Izumikawa, H. Oikawa, K. Ohnishi, S. Ohmika, I. Kato, Y. Kanke, N. Kanda, R. Kanbe, H. Kikuchi, A. Kitagawa, S. Sato, H. Shimamura, J. Shimaya, S. Suzuki, T. Suzuki, R. Takagaki, H. Takahashi, Y. Takei, Y. Takeuchi, T. Takenouchi, N. Tadano, M. Tanaka, Y. Tanaka, K. Chikaato, H. Du, J. Nagumo, K. Nishizuka, T. Nishimura, S. Fukuda, M. Machida, A. Mizukami, M. Mihara, J. Muraoka, S. Yagi, S. Yamaoka, T. Yamaguchi, K. Yokoyama

    ACTA PHYSICA POLONICA B   48 ( 3 )   409 - 414   2017.3

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:JAGIELLONIAN UNIV PRESS  

    We have developed a high time resolution time-of-flight (TOF) detector that detects the Cherenkov light emitted when an RI beam passes through a high refractive index glass. Ni-58 and Xe-132 beams of energies of 200 A 500 A MeV and secondary beams produced with those beams have been used for the test of the Cherenkov detectors. The time resolution of sigma = 5 ps with the inclusion of system resolution has been achieved with a 420 A MeV Xe-132 beam.

    DOI: 10.5506/APhysPolB.48.409

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  • Nuclear structure of <sup>15;16</sup>C via reaction cross-section measurements

    H. Du, M. Fukuda, D. Nishimura, M. Takechi, T. Suzuki, Y. Tanaka, I. Kato, M. Tanaka, K. Abe, T. Izumikawa, H. Oikawa, T. Ohtsubo, J. Ohno, Y. Kanke, H. Kikuchi, A. Kitagawa, S. Sato, U. Sayama, J. Shimaya, S. Suzuki, Y. Takeuchi, T. Takemoto, N. Tadano, R. Tamur, J. Nagumo, K. Nishizuka, S. Fukuda, K. Hori, S. Matsunaga, A. Mizukami, M. Mihara, E. Miyata, D. Murooka, S. Yamaoka, T. Yamaguchi

    Acta Physica Polonica B   48 ( 3 )   473 - 479   2017.3

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    Reaction cross sections for 15;16C on nuclear targets (Be, C, Al) and proton target are systematically measured in the intermediate energy range. Nucleon density distributions of 15;16C were deduced from the analyses of present data with existing experimental data using the Glauber-type calculation. Proton and neutron density distributions were also deduced separately from proton target data. Results of root-mean-square radii show a good agreement with theoretical calculations for both isotopes.

    DOI: 10.5506/APhysPolB.48.473

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  • Reaction cross sections for <sup>13-15</sup>b and one-neutron halo in 14b

    M. Tanaka, M. Fukuda, D. Nishimura, M. Takechi, S. Suzuki, H. Du, Y. Tanaka, K. Aoki, S. Fukuda, A. Honma, T. Izumikawa, Y. Kamisho, N. Kanda, I. Kato, Y. Kanke, A. Kitagawa, J. Kohno, M. Machida, K. Matsuta, M. Mihara, E. Miyata, Y. Morita, J. Muraoka, D. Murooka, T. Nagai, M. Nagashima, K. Ohnishi, J. Ohno, T. Ohtsubo, H. Oikawa, S. Sato, H. Shimamura, T. Sugihara, T. Suzuki, N. Tadano, R. Takagaki, Y. Takei, A. Takenouchi, S. Yagi, T. Yamaguchi, S. Yamaki, S. Yamaoka

    Acta Physica Polonica B   48 ( 3 )   461 - 466   2017.3

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    We have measured reaction cross sections (σ13;14;15B on Be, C, Al, and proton targets. In addition to the conventional method of deducing nucleon density distributions based on the Glauber-type calculation, the recently developed method for deducing point-proton and neutron density distributions separately from σoton targets were utilized for these nuclei. The result suggests the necessity for 14B of a large tail in its neutron density distribution, which can be referred to as a one-neutron halo. Rootmean- square point-proton, neutron and matter radii for 13;14;15B were also derived. From present systematic studies for 13;14;15B, a large enhancement of matter and neutron radii in 14B was found for the first time.

    DOI: 10.5506/APhysPolB.48.461

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  • Proton and neutron density distributions for proton-rich C isotopes

    Nishizuka K., Oikawa H., Ohnishi K., Ohno J., Kato I., Kanke Y., Kanbe S., Kanda N., Kikuchi H., Kitagawa A., Sato S., Takechi M., Sayama U., Shimaya J., Sugihara T., Suzuki S., Suzuki T., Takahashi H., Taguchi Y., Takei Y., Takeuchi Y., Takenouchi A., Ohtsubo T., Takemoto T., Tadano N., Tanaka M., Tanaka Y., Chikaato K., Du H., Nagai T., Nagumo J., Fukuda S., Hori K., Fukuda M., Honma A., Matsunaga S., Mizukami A., Mihara M., Miyata E., Murooka D., Machida M., Yagi S., Yamaoka S., Yamaguchi T., Nishimura D., Yokoyama K., Aoki K., Abe K., Ikeda A., Izumikawa T.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   314 - 314   2017

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    Language:Japanese   Publisher:The Physical Society of Japan  

    DOI: 10.11316/jpsgaiyo.72.1.0_314

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  • Measurements of charge-changing cross sections for Ca and Ni isotopes

    Tanaka M., Aimaganbetov A.S., Amano M., Arakawa H., Bagchi S., Behr K.-H., Burtebayev N., Chikaato K., Du H., Fujii T., Fukuda N., Takechi M., Geissel H., Hori T., Hoshino S., Igosawa R., Ikeda A., Inabe N., Inomata K., Itahashi K., Izumikawa T., Kamioka D., Honma A., Kanda N., Kato I., Kenzhina I., Korkulu Z., Kuk Ye., Kusaka K., Matsuta K., Mihara M., Miyata E., Nagae D., Suzuki T., Nakamura S., Nassurlla M., Nishimuro K., Nishizuka K., Ohmika S., Ohnishi K., Ohtake M., Ohtsubo T., Ong H.J., Ozawa A., Tanaka Y., Prochazka A., Sakhiyev S.K., Sakurai H., Scheidenberger C., Shimizu Y., Sugihara T., Sumikama T., Suzuki S., Suzuki H., Takeda H., Fukuda M., Tanaka Y.K., Tanihata I., Wada T., Wakayama K., Yagi S., Yamaguchi T., Yanagihara R., Yanagisawa Y., Yoshida K., Zholdybayev T.K., Nishimura D., Moriguchi T., Ahn D.S.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   232 - 232   2017

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    Language:Japanese   Publisher:The Physical Society of Japan  

    DOI: 10.11316/jpsgaiyo.72.1.0_232

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  • Reaction cross sections for <sup>10</sup>Be at medium energies and its structure

    Yagi S., Kosuke K., Kitagawa A., Kouno J., Sato S., Zhu Y., Suzuki S., Suzuki T., Tashiro K., Tanaka M., Nagashima M., Fukuda M., Honma A., Mihara M., Morita Y., Yamaki S., Yamaguchi T., Wakabayashi M., Watanabe D., Nishimura D., Takechi M., Iwamoto K., Izumikawa T., Ohtsubo T., Oono J., Kamisho Y.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   235 - 235   2017

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    DOI: 10.11316/jpsgaiyo.72.1.0_235

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  • Interaction cross section measurements for nuclei in Ni region on proton target

    Nakamura S., Aimaganbetov A.S., Amano M., Arakawa H., Bagchi S., Behr K.H., Burtebayev N., Chikaato K., Du H., Fujii T., Fukuda N., Takechi M., Geissel H., Hori T., Hoshino S., Igosawa R., Ikeda A., Inabe N., Inomata K., Itahashi K., Izumikawa T., Kamioka D., Tanaka M., Kanda N., Kato I., Kenzhina I., Korkulu Z., Kuk Ye., Kusaka K., Matsuta K., Mihara M., Miyata E., Nagae D., Honma A., Nassurlla M., Nishimuro K., Nishizuka K., Ohmika S., Ohnishi K., Ohtake M., Ohtsubo T., Ong H.J., Ozawa A., Prochazka A., Suzuki T., Sakhiyev S.K., Sakurai H., Scheidenberger C., Shimizu Y., Sugihara T., Sumikama T., Suzuki S., Suzuki H., Takeda H., Tanaka Y.K., Fukuda M., Tanaka Y., Tanihata I., Wada T., Wakayama K., Yagi S., Yamaguchi T., Yanagihara R., Yanagisawa Y., Yoshida K., Zholdybayev T.K., Nishimura D., Moriguchi T., Ahn D.S.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   231 - 231   2017

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    DOI: 10.11316/jpsgaiyo.72.1.0_231

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  • 1 proton removal cross sections for <sup>12</sup>N at intermediate energies

    Ohnishi K., Ohtsubo T., Kato I., Kanke Y., Kitagawa A., Sato S., Sugihara T., Suzuki T., Takahashi H., Takei Y., Takenouchi A., Fukuda M., Tadano N., Tanaka M., Tanaka Y., Chikaato K., Du H., Nagai T., Nishizuka K., Fukuda S., Machida M., Mihara M., Nishimura D., Miyata E., Yagi S., Yamaoka S., Yamaguchi T., Yokoyama K., Takechi M., Morita Y., Aoki K., Ikeda A., Izumikawa T., Oikawa H.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   237 - 237   2017

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    DOI: 10.11316/jpsgaiyo.72.1.0_237

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  • Measurement of Interaction Cross Sections for Neutron-rich Ni Isotopes

    Homma A., Aimaganbetov A.S., Amano M., Arakawa H., Bagchi S., Behr K.-H., Burtebayev N., Chikaato K., Du H., Fujii T., Fukuda N., Takechi M., Geissel H., Hori T., Igosawa R., Ikeda A., Inabe N., Inomata K., Itahashi K., Izumikawa T., Kamioka D., Ohtsubo T., Kanda N., Kato I., Kenzhina I., Korkulu Z., Kuk Ye., Kusaka K., Mihara M., Miyata E., Nagae D., Nakamura S., Tanaka M., Nassurlla M., Nishimuro K., Nishizuka K., Ohmika S., Ohnishi K., Ohtake M., Ong H.J., Ozawa A., Prochazka A., Sakurai H., Fukuda M., Scheidenberger C., Shimizu Y., Sugihara T., Sumikama T., Suzuki S., Suzuki H., Takeda H., Tanaka Y., Tanaka Y.K., Wada T., Suzuki T., Wakayama K., Yagi S., Yamaguchi T., Yanagihara R., Yanagisawa Y., Yoshida K., Zholdybayev T.K., Nishimura D., Moriguchi T., Ahn D.S.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   230 - 230   2017

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    Language:Japanese   Publisher:The Physical Society of Japan  

    DOI: 10.11316/jpsgaiyo.72.1.0_230

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  • Study of high-time-resolution detector for RI beams using Cherenkov radiation

    Miyata E., Oikawa H., Ohnishi K., Ohnishi J., Kato I., Kanda N., Kitagawa A., Sato S., Shimizu S., Sugihara T., Suzuki S., Takechi M., Suzuki T., Takahashi H., Tada M., Tadano N., Tanaka M., Tanaka Y., Tahara T., Du H., Nakamura S., Fukuda S., Ohtsubo T., Hosokawa H., Hori T., Honma A., Machida M., Mihara M., Yagi S., Yanagihara R., Yamaguchi T., Yokoyama K., Wakayama K., Fukuda M., Nishimura D., Ikeda A., Ishii R., Izumikawa T., Ito M.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   340 - 340   2017

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    DOI: 10.11316/jpsgaiyo.72.1.0_340

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  • Systematic study of nucleon removal reactions for neutron rich nuclei in Ni region

    Yanagihara R., Aimaganbetov A.S., Amano M., Arakawa H., Bagchi S., Behr K.H., Burtebayev N., Chikaato K., Du H., Fujii T., Fukuda N., Takechi M., Geissel H., Hori T., Hoshino S., Igosawa R., Ikeda A., Inabe N., Inomata K., Itahashi K., Izumikawa T., Kamioka D., Tanaka M., Kanda N., Kato I., Kenzhina I., Korkulu Z., Kuk Ye., Kusaka K., Matsuta K., Mihara M., Miyata E., Nagae D., Honma A., Nakamura S., Nassurlla M., Nishimuro K., Nishizuka K., Ohmika S., Ohnishi K., Ohtake M., Ohtsubo T., Ong H.J., Ozawa A., Suzuki T., Prochazka A., Sakhiyev S.K., Sakurai H., Scheidenberger C., Shimizu Y., Sugihara T., Sumikama T., Suzuki S., Suzuki H., Takeda H., Fukuda M., Tanaka Y.K., Tanaka Y., Tanihata I., Wada T., Wakayama K., Yagi S., Yamaguchi T., Yanagisawa Y., Yoshida K., Zholdybayev T.K., Nishimura D., Moriguchi T., Ahn D.S.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   315 - 315   2017

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    DOI: 10.11316/jpsgaiyo.72.1.0_315

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  • Interaction Cross Sections and Neutron skin thickness for Neutron-rich Ni Isotopes

    Homma A., Aimaganbetov A. S., Amano M., Arakawa H., Bagchi S., Behr K. -H., Burtebayev N., Chikaato K., Du H., Fujii T., Fukuda N., Takechi M., Geissel H., Hori T., Hoshino S., Igosawa R., Ikeda A., Inabe N., Inomata K., Itahashi K., Izumikawa T., Kamioka D., Ohtsubo T., Kanda N., Kato I., Kenzhina I., Korkulu Z., Kuk Ye., Kusaka K., Mihara M., Miyata E., Nagae D., Nakamura S., Tanaka M., Nassurlla M., Nishimuro K., Nishizuka K., Ohmika S., Ohnishi K., Ohtake M., Ong H. J., Ozawa A., Prochazka A., Sakurai H., Fukuda M., Scheidenberger C., Shimizu Y., Sugihara T., Sumikama T., Suzuki S., Suzuki H., Takeda H., Tanaka Y., Tanaka Y. K., Wada T., Suzuki T., Wakayama K., Yagi S., Yamaguchi T., Yanagihara R., Yanagisawa Y., Yoshida K., Zholdybayev T. K., Nishimura D., Moriguchi T., Ahn D. S.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   244 - 244   2017

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    DOI: 10.11316/jpsgaiyo.72.2.0_244

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  • Charge radii of C isotopes derived from charge-changing cross sections and reaction cross sections on proton target

    Ikeda A., Ohnishi K., Ohno J., Kato I., Kanke Y., Kanbe S., Kanda N., Kikuchi H., Kitagawa A., Sato S., Sayama U., Takechi M., Shimaya J., Sugihara T., Suzuki S., Suzuki T., Takahashi H., Taguchi Y., Takei Y., Takeuchi Y., Takenouchi A., Takemoto T., Ohtsubo T., Tadano N., Tanaka M., Tanaka Y., Chikaato K., Du H., Nagai T., Nagumo J., Nishizuka K., Fukuda S., Hori K., Fukuda M., Honma A., Matsunaga S., Mizukami A., Mihara M., Miyata E., Murooka D., Machida M., Yagi S., Yamaoka S., Yamaguchi T., Nishimura D., Yokoyama K., Aoki K., Abe K., Izumikawa T., Oikawa H.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   246 - 246   2017

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    DOI: 10.11316/jpsgaiyo.72.2.0_246

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  • Measurements of nucleon pick-up cross sections for nuclei around Z = 20 and 28

    Fukuda M., Aimaganbetov A. S., Amano M., Arakawa H., Bagchi S., Behr K. -H., Burtebayev N., Chikaato K., Du H., Fujii T., Fukuda N., Tanaka M., Geissel H., Hori T., Hoshino S., Igosawa R., Ikeda A., Inabe N., Inomata K., Itahashi K., Izumikawa T., Kamioka D., Takechi M., Kato I., Kenzhina I., Korkulu Z., Kuk Ye., Kusaka K., Matsuta K., Mihara M., Miyata E., Nagae D., Nakamura S., Honma A., Nassurlla M., Nishimuro K., Nishizuka K., Ohmika S., Ohnishi K., Ohtake M., Ohtsubo T., Ong H. J., Ozawa A., Prochazka A., Kanda N., Sakhiyev S. K., Sakurai H., Scheidenberger C., Shimizu Y., Sugihara T., Sumikama T., Suzuki S., Suzuki H., Takeda H., Tanaka Y., Suzuki T., Tanaka Y., Tanihata I., Wada T., Wakayama K., Yagi S., Yamaguchi T., Yanagihara R., Yanagisawa Y., Yoshida K., Zholdybayev T. K., Nishimura D., Moriguchi T., Ahn D. S.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   213 - 213   2017

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    DOI: 10.11316/jpsgaiyo.72.2.0_213

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  • Development and Performance Evaluation of Ring-Imaging Cherenkov Counter for Heavy Ions

    Machida M., Fukuda M., Mihara M., Tanaka M., Du H., Onishi K., Nakamura S., Hori T., Yanagihara R., Otsubo T., Takechi M., Chiba J., Miyata E., Homma A., Ikeda A., Kanda N., Izumikawa T., Suzuki T., Yamaguchi T., Kato I., Wakayama K., Moriguchi T., Nishimura D., Amano M., Kitagawa A., Fukuda S., Sato S., Oikawa H., Hosokawa H., Onishi J., Tada M., Ishii R., Tahara T.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   341 - 341   2017

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    DOI: 10.11316/jpsgaiyo.72.1.0_341

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  • Measurements of charge-changing cross sections for nuclei around Z = 20 and 28

    Tanaka M., Aimaganbetov A. S., Amano M., Arakawa H., Bagchi S., Behr K. -H., Burtebayev N., Chikaato K., Du H., Fujii T., Fukuda N., Takechi M., Geissel H., Hori T., Hoshino S., Igosawa R., Ikeda A., Inabe N., Inomata K., Itahashi K., Izumikawa T., Kamioka D., Honma A., Kato I., Kenzhina I., Korkulu Z., Kuk Ye., Kusaka K., Matsuta K., Mihara M., Miyata E., Nagae D., Nakamura S., Fukuda M., Nassurlla M., Nishimuro K., Nishizuka K., Ohmika S., Ohnishi K., Ohtake M., Ohtsubo T., Ong H. J., Ozawa A., Prochazka A., Kanda N., Sakhiyev S. K., Sakurai H., Scheidenberger C., Shimizu Y., Sugihara T., Sumikama T., Suzuki S., Suzuki H., Takeda H., Tanaka Y., Suzuki T., Tanaka Y. K., Tanihata I., Wada T., Wakayama K., Yagi S., Yamaguchi T., Yanagihara R., Yanagisawa Y., Yoshida K., Zholdybayev T. K., Nishimura D., Moriguchi T., Ahn D. S.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   214 - 214   2017

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    DOI: 10.11316/jpsgaiyo.72.2.0_214

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  • Measurements of Interaction Cross Sections for K isotopes

    Kanda N., Ahn D. S., Aimaganbetov A. S., Amano M., Arakawa H., Bagchi S., Behr K. H., Burtebayev N., Chikaato K., Du H., Fujii T., Takechi M., Fukuda N., Geissel H., Hori T., Hoshino S., Igosawa R., Ikeda A., Inobe N., Inomata K., Itahashi K., Izumikawa T., Ohtsubo T., Kamioka D., Kato I., Kenzhina I., Korkulu Z., Kuk Ye., Kusaka K., Mihara M., Miyata E., Nagae D., Nakamura S., Homma A., Nassurlla M., Nishimuro K., Nishizuka K., Ohmika S., Ohnishi K., Ohtake M., Ong H. J., Ozawa A., Prochazka A., Sakurai H., Tanaka M., Scheidenberger C., Shimizu Y., Sugihara T., Sumikawa T., Suzuki S., Suzuki H., Takeda H., Tanaka Y., Tanaka Y. K., Wada T., Fukuda M., Wakayama K., Yagi S., Yamaguchi T., Yanagihara R., Yanagisawa Y., Yoshida K., Zholdybayev T. K., Suzuki T., Nishimura D., Moriguchi T.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   245 - 245   2017

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    DOI: 10.11316/jpsgaiyo.72.2.0_245

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  • Production of Highly Spin Polarized <sup>12</sup>N Beam Using A Proton Target and Its Application

    Sugihara T., Kamisho K., Morita Y., Tanaka M., Onishi K., Yagi S., Minamisono T., Izumikawa T., Ohtsubo T., Nagashima M., Sakai T., Mihara M., Abe K., Ozawa A., Niwa T., Abe K., Ishibashi Y., Nagatomo T., Kitagawa A., Sato S., Kanazawa M., Torikoshi M., Matsuta K., Kubo K., Momota S., Nishimura D., Fukuda M., Yaguchi M., Iwamoto K., Wakabayashi M., Ohno J.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   231 - 231   2017

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    DOI: 10.11316/jpsgaiyo.72.2.0_231

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  • Behavior of Isolated Nitrogen Ion in Water Studied by NMR of Short-Lived nucleus $^{12}$N

    Sugihara T., Iwakairi S., Yanagihara R., Tanaka Y., Du H., Onishi K., Kambayashi S., Minamisono T., Yagi S., Nakamura S., Hori T., Mihara M., Nishimura D., Izumikawa T., Ozawa A., Ishibashi Y., Kitagawa A., Sato S., Torikoshi M., Momota S., Shimaya J., Matsuta K., Fukuda M., Ohno J., Tanaka M., Yamaoka S., Watanabe K.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   593 - 593   2017

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    DOI: 10.11316/jpsgaiyo.72.1.0_593

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  • Interaction cross sections for Ca isotopes and their nuclear structure

    Tanaka Y., Aimaganbetov A.S., Amano M., Arakawa H., Bagchi S., Behr K.-H., Burtebayev N., Chikaato K., Du H., Fujii T., Fukuda N., Takechi M., Geissel H., Hori T., Hoshino S., Igosawa R., Ikeda A., Inabe N., Inomata K., Itahashi K., Izumikawa T., Kamioka D., Tanaka M., Kanda N., Kato I., Kenzhina I., Korkulu Z., Kuk Ye., Kusaka K., Matsuta K., Mihara M., Miyata E., Nagae D., Honma A., Nakamura S., Nassurlla M., Nishimuro K., Nishizuka K., Ohmika S., Ohnishi K., Ohtake M., Ohtsubo T., Ong H.J., Ozawa A., Suzuki T., Prochazka A., Sakhiyev S.K., Sakurai H., Scheidenberger C., Shimizu Y., Sugihara T., Sumikama T., Suzuki S., Suzuki H., Takeda H., Fukuda M., Tanaka Y.K., Tanihata I., Wada T., Wakayama K., Yagi S., Yamaguchi T., Yanagihara R., Yanagisawa Y., Yoshida K., Zholdybayev T.K., Nishimura D., Moriguchi T., Ahn D.S.

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   233 - 233   2017

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  • Development of a Portable Gamma-ray Survey System for the Measurement of Air Dose Rates Reviewed

    GOTO Jun, SHOBUGAWA Yugo, KAWANO Yoh, AMAYA Yoshihiro, IZUMIKAWA Takuji, KATSURAGI Yoshinori, SHIIYA Tomohiro, SUZUKI Tsubasa, TAKAHASHI Takeshi, TAKAHASHI Toshihiro, YOSHIDA Hidenori, NAITO Makoto

    JPS Conference Proceedings (Web)   11   ROMBUNNO.070007 (WEB ONLY)   2016.11

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  • Measurements of Reaction Cross Sections for C9-11

    Kenji Nishizuka, Maya Takechi, Takashi Ohtsubo, Daiki Nishimura, Mitsunori Fukuda, Kazuya Aoki, Keijiro Abe, Ayaka Ikeda, Takuji Izumikawa, Hiroyuki Oikawa, Kosuke Ohnishi, Junichi Ohno, Shunichiro Ohmika, Ikuma Kato, Yuki Kanke, Shunsuke Kanbe, Naoto Kanda, Haruka Kikuchi, Atsushi Kitagawa, Shinji Sato, Umito Sayama, Jiro Shimaya, Takanobu Sugihara, Shinji Suzuki, Takeshi Suzuki, Hiroki Takahashi, Yoshisada Taguchi, Yuki Takei, Yuki Takeuchi, Arashi Takenouchi, Takanori Takemoto, Natsuki Tadano, Masaomi Tanaka, Yutaro Tanaka, Kazuya Chikaato, Hang Du, Takumi Nagai, Junya Nagumo, Shigekazu Fukuda, Kensyu Hori, Akira Honma, Masahiro Machida, Satoshi Matsunaga, Atsushi Mizukami, Mototsugu Mihara, Eri Miyata, Daiki Murooka, Shoichi Yagi, Shintaro Yamaoka, Takayuki Yamaguchi, Kouhei Yokoyama

    PROCEEDINGS OF THE 14TH INTERNATIONAL SYMPOSIUM ON NUCLEI IN THE COSMOS (NIC2016)   2016

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    In order to probe the differences of matter and charge radii of atomic nucleus in the proton-rich C isotopes, measurements of reaction cross sections (sigma(R)) for C9-11 on proton targets in the energy range from 50 to 120A MeV were performed at HIMAC facility, NIRS. Owing to the large di fferences between proton-proton and proton-neutron scattering cross sections at this intermediate energy region, sigma(R) data for atomic nuclei on proton targets are expected to have the sensitivity to the di fferences between proton and neutron distributions in the nucleus. Present preliminary data are compared with the Glauber calculation, which suggest the larger enhancements of proton distributions in C-9 and C-10 compared to C-11.

    DOI: 10.7566/JPSCP.14.021015

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  • Reaction cross section and nuclear structure of <sup>15,16</sup>C

    Du H., Fukuda M., Nishimura D., Takechi M., Abe K., Izumikawa T., Oikawa H., Ohtsubo T., Ohno J., Katou I., Kanke Y., Kikuchi H., Kitagawa A., Sato S., Sayama U., Shimaya J., Suzuki S., Suzuki T., Takeuchi Y., Takemoto T., Tadano N., Tanaka M., Tamura R., Tanaka Y., Nagumo J., Nishizuka K., Fukuda S., Hori K., Matsunaga S., Mizukami A., Mihara M., Miyata E., Murooka D., Yamaoka S., Yamaguchi T.

    Meeting Abstracts of the Physical Society of Japan   71   206 - 206   2016

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    DOI: 10.11316/jpsgaiyo.71.2.0_206

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  • NMR Detection of Short-Lived β-Emitter <sup>12</sup>N Implanted in Water

    Sugihara T., Mihara M., Shimaya J., Matsuta K., Fukuda M., Yaguchi M., Iwamoto K., Wakabayashi M., Ohno J., Kamisho K., Morita Y., Kanbe R., Tanaka M., Shinozaki S., Yamaoka S., Watanabe K., Iwakairi S., Yanagihara R., Tanaka Y., Du H., Onishi K., Kambayashi S., Minamisono T., Nishimura D., Izumikawa T., Ohtsubo T., Suzuki S., Nagashima M., Sakai T., Abe K., Nakamura Y., Murooka D., Ozawa A., Nagae D., Ishibashi Y., Abe K., Niwa T., Nagatomo T., Kitagawa A., Sato S., Torikoshi M., Momota S.

    Meeting Abstracts of the Physical Society of Japan   71   179 - 179   2016

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    DOI: 10.11316/jpsgaiyo.71.2.0_179

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  • Nuclear structure of <sup>6,8</sup>He via reaction cross section measurements

    Tanaka Y., Fukuda M., Nishimura D., Takechi M., Tanaka M., Du H., Ohnishi K., Aoki K., Ikeda A., Izumikawa T., Oikawa H., Ohtsubo T., Kato I., Kanke Y., Kitagawa A., Sato S., Sugihara T., Suzuki T., Takahashi K., Takei Y., Takenouchi A., Tadano N., Chikaato K., Nagai T., Nishizuka K., Fukuda S., Machida M., Mihara M., Miyata E., Yagi S., Yamaoka S., Yamaguchi T., Yokoyama K.

    Meeting Abstracts of the Physical Society of Japan   71   204 - 204   2016

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    DOI: 10.11316/jpsgaiyo.71.2.0_204

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  • Neutron removal cross sections and charge changing cross sections for <sup>6,8</sup>He

    Fukuda M., Tanaka Y., Tanaka M., Nishimura D., Takechi M., Du H., Ohnishi K., Aoki K., Ikeda A., Izumikawa T., Oikawa H., Ohtsubo T., Kato I., Kanke Y., Kitagawa A., Sato S., Sugihara T., Suzuki T., Takahashi K., Takei Y., Takenouchi A., Tadano N., Chikaato K., Nagai T., Nishizuka K., Fukuda S., Machida M., Mihara M., Miyata E., Yagi S., Yamaoka S., Yamaguchi T.

    Meeting Abstracts of the Physical Society of Japan   71   203 - 203   2016

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    DOI: 10.11316/jpsgaiyo.71.2.0_203

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  • Measurements of reaction cross sections and the density distributions for <sup>13,14,17</sup>C

    Kato I., Fukuda M., Abe K., Aoki K., Fukuda S., Hang D., Izumikawa T., Kanda N., Kanke Y., Kikuchi H., Kitagawa A., Machida M., Mihara M., Miyata E., Mizukami A., Muraoka J., Murooka D., Nagai T., Nagumo J., Nishimura D., Nishizuka K., Ohnishi K., Ohtsubo T., Oikawa H., Sato S., Sayama U., Shimaya J., Shimamura H., Sugihara T., Suzuki T., Tadano N., Takagaki R., Takechi M., Takei Y., Takemoto T., Takenouchi A., Takeuchi Y., Tanaka M., Tanaka Y., Yagi S., Yamaguchi T., Yamaoka S.

    Meeting Abstracts of the Physical Society of Japan   71   205 - 205   2016

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    DOI: 10.11316/jpsgaiyo.71.2.0_205

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  • Reaction cross sections for <sup>12</sup>N at medium energies and its structure

    Ohnishi K., Fukuda M., Nishimura D., Takechi M., Aoki K., Ikeda A., Izumikawa T., Oikawa H., Ohtsubo T., Kato I., Kanke Y., Kitagawa A., Sato S., Sugihara T., Suzuki S., Suzuki T., Takahashi H., Takei Y., Takenouchi A., Tadano N., Tanaka M., Tanaka Y., Chikaato K., Du H., Nagai T., Nishizuka K., Fukuda M., Machida M., Mihara M., Miyata E., Yagi S., Yamaoka S., Yamaguchi T., Yokoyama K.

    Meeting Abstracts of the Physical Society of Japan   71   207 - 207   2016

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    DOI: 10.11316/jpsgaiyo.71.2.0_207

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  • 20pAX-4 Measurement of Reactions Cross Sections for C Isotopes

    Nishizuka K., Takechi M., Ohtsubo T., Fukuda M., Nishimura D., Abe K., Izumikawa T., Oikawa H., Ohno J., Ohmika S., Kato I., Kanke Y., Kanbe S., Kikuchi H., Kitagawa A., Sato S., Sayama U., Shimaya J., Suzuki S., Suzuki T., Taguchi Y., Takeuchi Y., Takemoto T., Tadano N., Tanaka M., Tanaka Y., Du H., Nagumo J., Fukuda S., Hori K., Matsunaga S., Mizukami A., Mihara M., Miyata E., Murooka D., Yamaoka S., Yamaguchi T.

    Meeting Abstracts of the Physical Society of Japan   71   330 - 330   2016

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    DOI: 10.11316/jpsgaiyo.71.1.0_330

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  • 20pAB-7 Study of high-resolution Cherenkov TOF counter for RI beams

    Miyata E., Takechi M., Ohtsubo T., Fukuda M., Kanbe R., Nishimura D., Aoki K., Abe K., Ikeda A., Izumikawa T., Ohnishi K., Ohmika S., Kato I., Kanke Y., Kanda N., Kikuchi H., Kitagawa A., Sato S., Shimamura H., Shimaya J., Suzuki S., Suzuki T., Takagaki R., Takahashi H., Takei Y., Takeuchi Y., Takenouchi A., Tadano N., Tanaka M., Tanaka Y., Chikaato K., Du H., Nagai T., Nagumo J., Nishizuka K., Nishimura T., Fukuda S., Machida M., Mihara M., Muraoka J., Yagi S., Yamaoka S., Yamaguchi T., Yokoyama K.

    Meeting Abstracts of the Physical Society of Japan   71   321 - 321   2016

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    DOI: 10.11316/jpsgaiyo.71.1.0_321

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  • Between atomic and nuclear physics: radioactive decays of highly-charged ions Reviewed

    Dinko Atanasov, Klaus Blaum, Fritz Bosch, Carsten Brandau, Paul Buehler, Xiangcheng Chen, Iris Dillmann, Thomas Faestermann, Bingshui Gao, Hans Geissel, Roman Gernhaeuser, Siegbert Hagmann, Takuji Izumikawa, Pierre-Michel Hillenbrand, Christophor Kozhuharov, Jan Kurcewicz, Sergey A. Litvinov, Yuri A. Litvinov, Xinwen Ma, Gottfried Muenzenberg, Mohammad Ali Najafi, Fritz Nolden, Takashi Ohtsubo, Akira Ozawa, Fatma Cagla Ozturk, Zygmunt Patyk, Matthew Reed, Rene Reifarth, Mohammad Shahab Sanjari, Dieter Schneider, Markus Steck, Thomas Stoehlker, Baohua Sun, Fumi Suzaki, Takeshi Suzuki, Christian Trageser, Xiaolin Tu, Tomohiro Uesaka, Philip Walker, Meng Wang, Helmut Weick, Nicolas Winckler, Philip Woods, Hushan Xu, Takayuki Yamaguchi, Xinliang Yan, Yuhu Zhang

    JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS   48 ( 14 )   2015.7

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    Highly charged radioactive ions can be stored for extended periods of time in storage rings which allows for precision measurements of their decay modes. The straightforward motivation for performing such studies is that fully ionised nuclei or few-electron ions can be viewed as clean quantum-mechanical systems, in which the interactions of the many electrons can be either excluded or treated precisely. Thus, the influence of the electron shell on the decay probability can be investigated. Another important motivation is stellar nucleosynthesis, which proceeds at high temperatures and the involved atoms are therefore highly ionised. Presented here is a compact review of the relevant experiments conducted at heavy-ion storage rings. Furthermore, we outline the perspectives for future experiments at new-generation storage-ring facilities.

    DOI: 10.1088/0953-4075/48/14/144024

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  • beta-NMR study of boron in diamond Reviewed

    T. Izumikawa, M. Mihara, K. Matsuta, M. Fukuda, T. Ohtsubo, S. Ohya, T. Minamisono

    HYPERFINE INTERACTIONS   230 ( 1-3 )   11 - 14   2015.4

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    A beta-NMR study of B-12 implanted in diamond was performed in order to investigate the implantation sites and the defects. The maintained polarization of B-12 was measured by use of widely modulated rf around the Larmor frequency (nu = nu (L) +/- 200 kHz) as a function of temperature from 160 K to 320 K. The observed polarization was found to be almost constant at about 0.9 % in this temperature range. The initial polarization for this system was obtained as about 8.1 %. Therefore about 10 % of the implanted B-12 maintained its polarization in this frequency range. Conversely, about 90 % of the implanted B-12 was undetected in the present experiment.

    DOI: 10.1007/s10751-014-1090-z

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  • Density distribution of Li-8 and B-8 and capture reaction at low energy Reviewed

    Fan G. W, Fukuda M, Nishimura D, Cai X. L, Fukuda S, Hachiuma I, Ichikawa C, Izumikawa T, Kanazawa M, Kitagawa A, Kuboki T, Lantz M, Mihara M, Nagashima M, Namihira K, Ohkuma Y, Ohtsubo T, Ren Zhongzhou, Sato S, Sheng Z. Q, Sugiyama M, Suzuki S, Suzuki T, Takechi M, Yamaguchi T, Xu W

    PHYSICAL REVIEW C   91 ( 1 )   2015.1

  • 22pCF-11 Performance evaluation of ionization chamber by comparison with GEANT4 simulation II

    Kanke Y., Chiba J., Nishimura D., Fukuda M., Homma A., Izumikawa T., Kamisho Y., Kanbe R., Kinno S., Kitagawa A., Matsunaga S., Mihara M., Morita Y., Murooka D., Nagashima M., Nagumo J., Ohno J., Ohtsubo T., Omika S., Sato S., Suzuki S., Suzuki T., Taguchi Y., Takechi M., Takeuchi Y., Tanaka M., Tashiro K., Fukuda S., Watanabe K., Yamaoka S., Yamaguchi T., Yoshinaga K., Yoshinobu T., Zhu Y.

    Meeting Abstracts of the Physical Society of Japan   70   347 - 347   2015

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    DOI: 10.11316/jpsgaiyo.70.1.0_347

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  • 22pCD-5 Neutrons removal cross sections for neutron rich nucleus ^8He and its structure

    Tanaka M., Fukuda M., Nishimura D., Takechi M., Suzuki S., Mihara M., Matsuta K., Morita Y., Kamisyo Y., Ohno J., Kanbe R., Yamaoka S., Watanabe K., Ohtsubo T., Izumikawa T., Nagashima M., Honma A., Murooka D., Suzuki T., Yamaguchi T., Kohno J., Yamaki S., Matsunaga S., Kinno S., Taguchi Y., Kitagawa A., Fukuda S., Sato S.

    Meeting Abstracts of the Physical Society of Japan   70   330 - 330   2015

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    DOI: 10.11316/jpsgaiyo.70.1.0_330

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  • 24aCE-12 Nuclear magnetic resonance of short-lived β-emitter ^<12>N in H_2O

    Shimaya J., Mihara M., Iwakiri S., Matsuta K., Fukuda M., Minamisono T., Ohno J., Tanaka M., Yamaoka S., Tanaka Y., Hang Du, Kanbe R., Watanabe K., Yanagihara R., Ishibashi Y., Ozawa A., Nagae D., Ohtsubo T., Izumikawa T., Momota S., Nagatomo T., Nisimura D., Kitagawa A., Torikoshi M., Sato S.

    Meeting Abstracts of the Physical Society of Japan   70   382 - 382   2015

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  • 23pCF-4 Development of RICH counter for heavy-ion particle identification

    Yamaoka S., Fukuda M., Mihara M., Matsuta K., Ohno J., Tanaka M., Kanbe S., Shimaya J., Tanaka Y., Du Hang, Suzuki T., Yamaguchi T., Takeuchi Y., Tadano N., Miura H., Nishimura D., Nagumo J., Kanke Y., Oikawa H., Kambara N., Abe K., Ohtsubo T., Takechi M., Murooka D., Izumikawa T., Suzuki S., Sato S., Kitagawa A., Fukuda S., Matsunaga S.

    Meeting Abstracts of the Physical Society of Japan   70   356 - 356   2015

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    DOI: 10.11316/jpsgaiyo.70.1.0_356

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  • 22aCD-4 Possibility of a study of momentum distribution of nucleons inside a nucleus by using nucleon pick-up reactions

    Fukuda M., Tadano N., Yamaoka S., Tanaka M., Ohno J., Kanbe R., Mihara M., Matsuta K., Shimaya J., Tanaka Y., Du Hang, Suzuki T., Yamaguchi T., Takeuchi Y., Miura S., Takechi M., Ohtsubo T., Murooka D., Izumikawa T., Nishimura D., Nagumo J., Kanke Y., Oikawa H., Kambara N., Suzuki S., Sato S., Fukuda S., Kitagawa A.

    Meeting Abstracts of the Physical Society of Japan   70   311 - 311   2015

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    DOI: 10.11316/jpsgaiyo.70.1.0_311

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  • 25aSF-11 Reaction cross section and nuclear structure of ^<16>C

    Tanaka Y., Fukuda M., Nishimura D., Takechi M., Tanaka M., Abe K., Izumikawa T., Oikawa H., Ohtsubo T., Ohno J., Katou I., Kanke Y., Kikuchi H., Kitagawa A., Sato S., Sayama U., Shimaya J., Suzuki S., Suzuki T., Takeuchi Y., Takemoto T., Tadano N., Tamura R., Du H., Nagumo J., Nishizuka K., Fukuda S., Hori K., Matsunaga S., Mizukami A., Mihara M., Miyata E., Murooka D., Yamaoka S., Yamaguchi T.

    Meeting Abstracts of the Physical Society of Japan   70   221 - 221   2015

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    DOI: 10.11316/jpsgaiyo.70.2.0_221

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  • 25aSF-10 Reaction cross section and nuclear structure of ^<15>C

    Du H., Fukuda M., Nishimura D., Takechi M., Tanaka M., Abe K., Izumikawa T., Oikawa H., Ohtsubo T., Ohno J., Katou I., Kanke Y., Kikuchi H., Kitagawa A., Sato S., Sayama U., Shimaya J., Suzuki S., Suzuki T., Takeuchi Y., Takemoto T., Tadano N., Tanaka Y., Tamura R., Nagumo J., Nishizuka K., Fukuda S., Hori K., Matsunaga S., Mizukami A., Mihara M., Miyata E., Murooka D., Yamaoka S., Yamaguchi T.

    Meeting Abstracts of the Physical Society of Japan   70   220 - 220   2015

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  • 25aSF-9 Neutron removal cross sections for neutron-rich nuclei in the p-sd shell region

    Fukuda M., Tanaka M., Tanaka Y., Du Hang, Nishimura D., Takechi M., Abe K., Izumikawa T., Oikawa H., Ohtsubo T., Ohno J., Kato I., Kanke Y., Kikuchi H., Kitagawa A., Sato S., Sayama K., Shimaya J., Suzuki S., Suzuki T., Takeuchi Y., Takemoto T., Tadano N., Tamura R., Nagumo J., Nishizuka K., Fukuda S., Horikane O., Matsunaga T., Minakami A., Mihara M., Miyata E., Murooka D., Yamaoka S., Yamaguchi T.

    Meeting Abstracts of the Physical Society of Japan   70   219 - 219   2015

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  • 25aSF-12 Momentum distributions of the neutron removal fragments in the sd-shell region by utilizing the ΔE measurement

    Tanaka M., Fukuda M., Nishimura D., Takechi M., Tanaka Y., Du H., Abe K., Izumikawa T., Oikawa H., Ohtsubo T., Ohno J., Kato I., Kanke Y., Kikuchi H., Kitagawa A., Sato S., Sayama K., Shimaya J., Suzuki S., Suzuki T., Takeuchi Y., Takemoto K., Tadano N., Tamura R., Nagumo J., Nishizuka K., Fukuda S., Hori K., Matsunaga S., Mizokami J., Mihara M., Miyata E., Murooka D., Yamaoka S., Yamaguchi T.

    Meeting Abstracts of the Physical Society of Japan   70   222 - 222   2015

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  • 26pSH-6 Development of high-resolution Cherenkov TOF counter for RI beams

    Miyata E., Kikuchi H., Takechi M., Ohtsubo T., Fukuda M., Nishimura D., Abe K., Izumikawa T., Oikawa H., Ohno J., Ohmika S., Katou I., Kanke Y., Kanbe R., Kitagawa A., Kinno S., Sato S., Sayama U., Shimaya J., Suzuki S., Suzuki T., Taguchi Y., Takeuchi Y., Takemoto T., Tadano N., Tanaka M., Tanaka Y., Du H., Nagumo J., Nishizuka K., Nishimura T., Fukuda S., Matsunaga S., Mizukami A., Mihara M., Murooka D., Morita Y., Yamaoka S., Yamaguchi T., Watanabe K.

    Meeting Abstracts of the Physical Society of Japan   70   284 - 284   2015

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  • 28aSF-2 Energy dependence of the production cross sections in nucleon pickup reaction

    Tadano N., Fukuda M., Yamaoka S., Fukuda S., Izumikawa T., Kanbara N., Kanbe S., Kanke Y., Kitagawa A., Matsunaga S., Mihara M., Miura H., Murooka D., Nagumo J., Nishimura T., Ohtsubo T., Oikawa H., Sato S., Shimaya J., Suzuki S., Takechi M., Takeuchi Y., Tanaka M., Tanaka Y., Du H., Yamaguchi T., Suzuki T.

    Meeting Abstracts of the Physical Society of Japan   70   323 - 323   2015

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  • Study of spatial resolution of proton computed tomography using a silicon strip detector Reviewed

    Y. Saraya, T. Izumikawa, J. Goto, T. Kawasaki, T. Kimura

    Nuclear Inst. and Methods in Physics Research   A735C   485 - 489   2014.11

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  • Structure of Li-8 from a reaction cross-section measurement Reviewed

    G. W. Fan, M. Fukuda, D. Nishimura, X. L. Cai, S. Fukuda, I. Hachiuma, C. Ichikawa, T. Izumikawa, M. Kanazawa, A. Kitagawa, T. Kuboki, M. Lantz, M. Mihara, M. Nagashima, K. Namihira, Y. Ohkuma, T. Ohtsubo, Zhongzhou Ren, S. Sato, Z. Q. Shen, M. Sugiyama, S. Suzuki, T. Suzuki, M. Takechi, T. Yamaguchi, B. J. Xu, W. Xu

    PHYSICAL REVIEW C   90 ( 4 )   2014.10

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    We have precisely measured reaction cross sections (sigma(R)) for Li-8 using Be-9, C-12, Al-27, and proton targets at intermediate energies by the transmission method. From the energy dependence of the sigma(R) including the high energy data, the density distribution of Li-8 was deduced through a modified Glauber model. It is shown that Li-8 has a shorter tail structure in the density as compared with that of B-8 and the matter radius of Li-8 is similar to those of the other nonhalo Li isotopes. The result is consistent with the previous experiments that there is a tendency for Li-8 to be a skin nucleus.

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  • Charge-changing cross sections of Ne-30, Na-32,Na-33 with a proton target Reviewed

    A. Ozawa, T. Moriguchi, T. Ohtsubo, N. Aoi, D. Q. Fang, N. Fukuda, M. Fukuda, H. Geissel, I. Hachiuma, N. Inabe, Y. Ishibashi, S. Ishimoto, Y. Ito, T. Izumikawa, D. Kameda, T. Kubo, T. Kuboki, K. Kusaka, M. Lantz, Y. G. Ma, M. Mihara, Y. Miyashita, S. Momota, D. Nagae, K. Namihira, D. Nishimura, H. Ooishi, Y. Ohkuma, T. Ohnishi, M. Ohtake, K. Ogawa, Y. Shimbara, T. Suda, T. Sumikama, H. Suzuki, S. Suzuki, T. Suzuki, M. Takechi, H. Takeda, K. Tanaka, R. Watanabe, M. Winkler, T. Yamaguchi, Y. Yanagisawa, Y. Yasuda, K. Yoshinaga

    PHYSICAL REVIEW C   89 ( 4 )   2014.4

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    The total charge-changing, charge pick-up, and partial charge-changing cross sections of very neutron-rich nuclei (Ne-30, Na-32,Na-33) with a proton target have been measured at similar to 240A MeV for the first time. We introduced the phenomenological correction factor in Glauber-model calculations for the total charge-changing cross sections with the proton target, and applied it to deduce the proton radii of these nuclei. For 30Ne and Na-32, the neutron skin thicknesses of the nuclei were deduced by comparing the proton radii with the matter radii deduced from the interaction cross-section measurements. A significant thick neutron-skin has been observed for the nuclei. We also found that the charge pick-up cross sections are much larger than those in the systematics of stable nuclei.

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  • High rate silicon tracker for proton computed tomography Reviewed

    T. Kawasaki, T. Izumikawa, J. Goto, Y. Saraya

    2014 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC)   2014

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    Proton computed tomography (CT) is an imaging technique using a high-energy proton beam penetrating the human body and shows promise for improving the quality of cancer therapy with high-energy particle beams because more accurate electron density distribution measurements and in-situ positioning can be achieved with proton CT. The deterioration of the spatial resolution owing to multiple Coulomb scattering is saved by reconstructing the proton trajectory. We have developed a prototype system for proton CT and demonstrate a precise measurement of electron density and an improvement in spatial resolution. In order to control of the radiation dose and reduce the exposure time for imaging, the precise position detector should work with very high rate (a few MHz). We have developed high speed tracker with large area silicon strip detector, Amplifier-Shaper-Discriminator LSI, which was developed for drift chamber readout at high energy physics experiment, and FPGA. We report the performance of the tracker evaluated with very high intensity proton beam for the cancer therapy.

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  • First observation of an isomeric state in proton drip-line nucleus P-26

    D. Nishimura, M. Fukuda, T. Sakai, M. Tanaka, K. Abe, J. Chiba, S. Fukuda, H. Furuki, A. Homma, H. Hotaka, N. Ichihashi, N. Inaba, K. Iwamoto, T. Izumikawa, Y. Kamisho, K. Kanbe, N. Kikukawa, A. Kitagawa, J. Kouno, M. Nagashima, Y. Nakamura, I. Nishizuka, K. Matsuta, M. Mihara, S. Miyazawa, Y. Morita, J. Ono, T. Ohtsubo, K. Sato, S. Sato, D. Sera, S. Suzuki, S. Suzuki, T. Suzuki, M. Takechi, K. Tashiro, M. Wakabayashi, D. Watanabe, M. Yaguchi, T. Yamaguchi, S. Yamaki, S. Yasumoto, K. Yoshinaga, Y. Zhu

    INPC 2013 - INTERNATIONAL NUCLEAR PHYSICS CONFERENCE, VOL. 1   66   2014

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    An isomeric state in the proton drip-line nucleus P-26 has been observed by the gamma-ray spectroscopy. The gamma-ray energy and the half-life are 164.4 +/- 0.1 keV and 120 +/- 9 ns, respectively. For the isomeric transition of the mirror nucleus Na-26, the gamma-ray energy of 82.40 +/- 0.04 keV and the half-life of 4.35 +/- 0.16 mu s are also revised. Comparing the experimental reduced transition probabilities of Na-26 and P-26 with theoretical ones calculated by the shell model with the USDA interaction, the spin-parity (J(pi)) of the isomeric state in P-26 is most likely to be 1(+).

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  • Neutron halo in <sup>14</sup>B studied via reaction cross sections

    M. Fukuda, D. Nishimura, S. Suzuki, M. Tanaka, M. Takechi, K. Iwamoto, S. Wakabayashi, M. Yaguchi, J. Ohno, Y. Morita, Y. Kamisho, M. Mihara, K. Matsuta, M. Nagashima, T. Ohtsubo, T. Izumikawa, T. Ogura, K. Abe, N. Kikukawa, T. Sakai, D. Sera, T. Suzuki, T. Yamaguchi, K. Sato, H. Furuki, S. Miyazawa, N. Ichihashi, J. Kohno, S. Yamaki, A. Kitagawa, S. Sato, S. Fukuda

    EPJ Web of Conferences   66   2014

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    Reaction cross sections (σR) for the neutron-rich nucleus 14B on Be, C, and Al targets have been measured at several energies in the intermediate energy range of 45-120 MeV/nucleon. The present experimental σR show a significant enhancement relative to the systematics of stable nuclei. The nucleon density distribution was deduced through the fitting procedure with the modified Glauber calculation. The necessity of a long tail in the density distribution was found, which is consistent with the valence neutron in 2s1/2 orbital with the small empirical one-neutron separation energy in 14B. © Owned by the authors, published by EDP Sciences, 2014.

    DOI: 10.1051/epjconf/20146602037

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  • Performance of high-resolution position-sensitive detectors developed for storage-ring decay experiments

    T. Yamaguchi, F. Suzaki, T. Izumikawa, S. Miyazawa, K. Morimoto, T. Suzuki, F. Tokanai, H. Furuki, N. Ichihashi, C. Ichikawa, A. Kitagawa, T. Kuboki, S. Momota, D. Nagae, M. Nagashima, Y. Nakamura, R. Nishikiori, T. Niwa, T. Ohtsubo, A. Ozawa, K. Sato, S. Sato, S. Suzuki

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   317   697 - 700   2013.12

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    As next generation spectroscopic tools, heavy-ion cooler storage rings will be a unique application of highly charged RI beam experiments. Decay spectroscopy of highly charged rare isotopes provides us important information relevant to the stellar conditions, such as for the s- and r-process nucleosynthesis. In-ring decay products of highly charged RI will be momentum-analyzed and reach a position-sensitive detector set-up located outside of the storage orbit. To realize such in-ring decay experiments, we have developed and tested two types of high-resolution position-sensitive detectors: silicon strips and scintillating fibers. The beam test experiments resulted in excellent position resolutions for both detectors, which will be available for future storage-ring experiments. (C) 2013 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nimb.2013.07.056

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  • Spin-polarized radioactive isotope beam produced by tilted-foil technique Reviewed

    Yoshikazu Hirayama, Mototsugu Mihara, Yutaka Watanabe, Sun-Chan Jeong, Hiroari Miyatake, Sadao Momota, Takashi Hashimoto, Nobuaki Imai, Kensaku Matsuta, Hironobu Ishiyama, Shin-ichi Ichikawa, Tetsuro Ishii, Takuji Izumikawa, Ichiro Katayama, Hirokane Kawakami, Hirokazu Kawamura, Ichiro Nishinaka, Katsuhisa Nishio, Hiroyuki Makii, Shin-ichi Mitsuoka, Aakihiko Osa, Yoshinori Otokawa, Tetsuya K. Sato, Yasuo Wakabayashi

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   317   693 - 696   2013.12

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    The tilted-foil method for producing spin-polarized radioactive isotope beams has been studied using the re-accelerated radioactive Li-8 and In-123 beams produced at Tokai Radioactive Ion Accelerator Complex (TRIAC) facility. We successfully produced polarization in a Li-8 beam of 7.3(5)% using thin polystyrene foils (4.2 mu g/cm(2)). The systematic study of the nuclear polarization as a function of the number of foils and beam energy has been performed, confirming the features of the tilted-foil technique experimentally. After the study, a spin-polarized radioactive In-123 beam, which is the heaviest ever polarized in its ground state by this method, has been successfully generated by the tilted-foil method, for the nuclear spectroscopy around the doubly magic nucleus Sn-132. (V) 2013 Elsevier B.V. All rights reserved.

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  • Momentum dependence of spin polarization for beta emitting nuclei produced through charge exchange reaction at intermediate energy Reviewed

    Momota S, Mihara M, Nishimura D, Fukuda M, Kamisho Y, Wakabayashi M, Matsuta K, Suzuki S, Nagashima M, Zhu Shengyun, Yuan Daqing, Zheng Yongnan, Yi Zuo, Fan Ping, Izumikawa T, Kitagawa A, Sato S, Kanazawa M, Torikoshi M, Minamisono T, Nakamura Y, Tashiro K, Honma A, Yoshida N, Shirai H, Ohtsubo T, Nagatomo T, Uenishi H, Iwamoto K, Yaguchi M, Ogura T, Ito T, Yamamura K, Ichikawa Y, Nojiri Y, Alonso J. R, Symons T. J

    HYPERFINE INTERACTIONS   220 ( 1-3 )   53 - 58   2013.5

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    DOI: 10.1007/s10751-012-0741-1

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  • Production of spin polarized N-12 through heavy ion reactions Reviewed

    M. Mihara, K. Matsuta, D. Nishimura, M. Fukuda, M. Yaguchi, K. Iwamoto, M. Wakabayashi, Y. Kamisho, J. Ohno, Y. Morita, T. Izumikawa, T. Ohtsubo, S. Suzuki, M. Nagashima, K. Abe, T. Sakai, S. Momota, A. Ozawa, D. Nagae, Y. Ishibashi, Y. Abe, T. Niwa, T. Nagatomo, T. Minamisono, M. K. Kubo, A. Kitagawa, M. Torikoshi, M. Kanazawa, S. Sato

    HYPERFINE INTERACTIONS   220 ( 1-3 )   83 - 88   2013.5

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    Production of spin polarized short-lived nucleus N-12 (I (pi) = 1 (+) , T (1/2) = 11 ms) using heavy ion reactions at intermediate energies has been performed. Typical polarization of about -25 % and +10 % through the projectile fragmentation Be(N-14, N-12)X and the charge exchange CH2(C-12, N-12)X processes, respectively, was obtained. The present study proved that the combination of a C-12 beam and a proton target provides a fairly good quality of polarized N-12 beam in terms of intensity and energy uniformity, and is promising for materials science use of N-12 as a nuclear probe.

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  • Nuclear moments as a probe of electronic structure in material, exotic nuclear structure and fundamental symmetry

    K. Matsuta, T. Minamisono, M. Mihara, M. Fukuda, Shengyun Zhu, Y. Masuda, K. Hatanaka, Daqing Yuan, Yongnan Zheng, Yi Zuo, Ping Fang, Dongmei Zhou, T. Ohtsubo, T. Izumikawa, S. Momota, D. Nishimura, R. Matsumiya, A. Kitagawa, S. Sato, M. Kanazawa, M. Torikoshi, T. Nagatomo, Y. Nojiri, T. Suzuki, Xizhen Zhang, J. R. Alonso, T. J.M. Symons, S. Kawasaki, S. C. Jeong, Y. Watanabe, K. Minamisono

    Hyperfine Interactions   220 ( 1-3 )   21 - 28   2013.5

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    We report our studies in various fields of Physics through nuclear moments utilizing the β-NMR technique, including material sciences, nuclear structures and fundamental symmetries. Especially, we focus on the recent progress in the studies on the electronic structure in Pt through Knight shifts of various impurities, lattice locations of impurities, electric field gradients, the analysis of nuclear spin in terms of its components, anomaly in the spin expectation value for 9C-9Li mirror pair, the G-parity conservation law, and the Ramsey resonance on UCN for future neutron EDM measurements. © 2013 Springer Science+Business Media Dordrecht.

    DOI: 10.1007/s10751-013-0847-0

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  • A Map for the Future: Measuring Radiation Levels in Fukushima, Japan Reviewed

    Yoh Kawano, David Shepard, Yugo Shobugawa, Jun Goto, Tsubasa Suzuki, Yoshihiro Amaya, Masayasu Oie, Takuji Izumikawa, Hidenori Yoshida, Yoshinori Katsuragi, Toshihiro Takahashi, Shigeru Hirayama, Reiko Saito, Makoto Naito

    2012 IEEE Global Humanitarian Technology Conference   53 - 58   2012.10

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  • Interaction cross sections for Ne isotopes towards the island of inversion and halo structures of<sup>29</sup>Ne and<sup>31</sup>Ne Reviewed

    M. Takechi, T. Ohtsubo, M. Fukuda, D. Nishimura, T. Kuboki, T. Suzuki, T. Yamaguchi, A. Ozawa, T. Moriguchi, H. Ooishi, D. Nagae, H. Suzuki, S. Suzuki, T. Izumikawa, T. Sumikama, M. Ishihara, H. Geissel, N. Aoi, Rui Jiu Chen, De Qing Fang, N. Fukuda, I. Hachiuma, N. Inabe, Y. Ishibashi, Y. Ito, D. Kameda, T. Kubo, K. Kusaka, M. Lantz, Yu Gang Ma, K. Matsuta, M. Mihara, Y. Miyashita, S. Momota, K. Namihira, M. Nagashima, Y. Ohkuma, T. Ohnishi, M. Ohtake, K. Ogawa, H. Sakurai, Y. Shimbara, T. Suda, H. Takeda, S. Takeuchi, K. Tanaka, R. Watanabe, M. Winkler, Y. Yanagisawa, Y. Yasuda, K. Yoshinaga, A. Yoshida, K. Yoshida

    Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics   707   357 - 361   2012.2

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    Interaction cross sections (σI) for Ne isotopes from the stability line to the vicinity of the neutron drip line have been measured at around 240 MeV/nucleon using BigRIPS at RIBF, RIKEN. The σIfor27-32Ne in every case exceed the systematic mass-number dependence of σIfor stable nuclei, which can be explained by considering the nuclear deformation. In particular the σIfor29Ne and31Ne are significantly greater than those of their neighboring nuclides. These enhancements of σIfor29Ne and31Ne cannot be explained by a single-particle model calculation under the assumption that the valence neutron of29Ne (31Ne) occupies the 0d3/2(0f7/2) orbital, as expected from the standard spherical shell ordering. The present data suggest an s dominant halo structure of29Ne and s- or p-orbital halo in31Ne. © 2011 Elsevier B.V.

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  • Half-life measurements of stored fully ionized and hydrogen-like I-122 ions

    D. R. Atanasov, N. Winckler, D. Balabanski, L. Batist, F. Bosch, D. Boutin, C. Brandau, C. Dimopoulou, H. G. Essel, T. Faestermann, H. Geissel, I. Hachiuma, S. Hess, T. Izumikawa, P. Kienle, R. Knoebel, C. Kozhuharov, J. Kurcewicz, N. Kuzminchuk, S. A. Litvinov, Yu. A. Litvinov, R. S. Mao, R. Maertin, M. Mazzocco, G. Muenzenberg, K. Namihira, F. Nolden, T. Ohtsubo, Z. Patyk, R. Reuschl, M. S. Sanjari, C. Scheidenberger, D. Shubina, U. Spillmann, M. Steck, Th. Stoehlker, B. Sun, T. Suzuki, M. Trassinelli, I. I. Tupitsyn, H. Weick, M. Winkler, D. F. A. Winters, T. Yamaguchi

    EUROPEAN PHYSICAL JOURNAL A   48 ( 2 )   2012.2

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    The half-lives of fully ionized and hydrogen-like (H-like) I-122 ions have been measured in a heavy-ion storage ring. The beta(+)-decay constants for both charge states and the electron capture (EC) decay constant of H-like ions have been determined. The EC-decay constant in H-like I-122 ions lambda(H-like)(EC) = 7.35(33) . 10(-4) s(-1) is, within the uncertainty, the same as the one in neutral atoms. This result is in agreement with the estimates of recent theoretical considerations on the EC-decay of few-electron ions that explicitly take into account the conservation of the total angular momentum of the nucleus plus lepton(s) system and its projections. No firm confirmation could be concluded from our results on the predicted effect that allowed Gamow-Teller transitions become forbidden if the initial and final total angular momenta are not equal.

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  • 25aXA-8 反応断面積による核構造研究 : HIMACでの研究成果とこれから(25aXA 実験核物理領域,理論核物理領域合同シンポジウム:反応断面積による不安定核のハロー・スキン構造研究の新展開,実験核物理領域)

    福田 光順, 長島 正幸, 中島 真平, 鈴木 健, 山口 貴之, 佐藤 眞二, 福田 茂一, 金澤 光隆, 北川 敦志, 武智 麻耶, 西村 太樹, 鈴木 伸司, 久保木 隆正, 三原 基嗣, 松多 健策, 大坪 隆, 泉川 卓司

    日本物理学会講演概要集   67 ( 0 )   91 - 91   2012

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    DOI: 10.11316/jpsgaiyo.67.1.1.0_91_1

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  • One- and two-neutron removal reactions from C-19,C-20 with a proton target

    A. Ozawa, Y. Hashizume, Y. Aoki, K. Tanaka, T. Aiba, N. Aoi, H. Baba, B. A. Brown, M. Fukuda, K. Inafuku, N. Iwasa, T. Izumikawa, K. Kobayashi, M. Komuro, Y. Kondo, T. Kubo, M. Kurokawa, T. Matsuyama, S. Michimasa, T. Motobayashi, T. Nakabayashi, S. Nakajima, T. Nakamura, T. Ohtsubo, H. Sakurai, R. Shinoda, M. Shinohara, H. Suzuki, T. Suzuki, M. Takechi, E. Takeshita, S. Takeuchi, Y. Togano, K. Yamada, T. Yamaguchi, T. Yasuno, M. Yoshitake

    PHYSICAL REVIEW C   84 ( 6 )   2011.12

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    One-and two-neutron removal reactions from C-19 and C-20 have been studied using a liquid-hydrogen target at 40A MeV. A small cross section has been observed in the one-neutron removal reaction from C-20. The observed inclusive removal cross sections are compared with theoretical removal cross sections calculated by using shell model spectroscopic factors and Glauber-model single-particle cross sections. The observed momentum distributions are also compared with those calculated by using continuum-discretized coupled-channel methods. Good consistency between theory and experiment is shown in the one-neutron removal reaction from C-19. However, our theoretical calculation fails to reproduce the neutron removal reactions from C-20, which suggests that further improvements of the theoretical descriptions are necessary.

    DOI: 10.1103/PhysRevC.84.064315

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  • Nuclear reactions of C-19,C-20 on a liquid hydrogen target measured with the superconducting TOF spectrometer Reviewed

    T. Yamaguchi, K. Tanaka, T. Suzuki, A. Ozawa, T. Ohtsubo, T. Aiba, N. Aoi, H. Baba, M. Fukuda, Y. Hashizume, K. Inafuku, N. Iwasa, T. Izumikawa, K. Kobayashi, M. Komuro, Y. Kondo, T. Kubo, M. Kurokawa, T. Matsuyama, S. Michimasa, T. Motobayashi, T. Nakabayashi, S. Nakajima, T. Nakamura, H. Sakurai, R. Shinoda, M. Shinohara, H. Suzuki, M. Takechi, E. Takeshita, S. Takeuchi, Y. Togano, K. Yamada, T. Yasuno, M. Yoshitake

    NUCLEAR PHYSICS A   864 ( 1 )   1 - 37   2011.8

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    Reaction cross sections with various kinds of breakup channels for neutron-rich carbon isotopes C18-20 and for Be-9 impinging on a liquid hydrogen target were investigated at 40 MeV/nucleon. The nuclides of interest were produced via projectile fragmentation from a 63 MeV/nucleon Ar-40 beam and were separated in flight at the RIKEN projectile fragment separator (RIPS). The combination of the large-acceptance superconducting TOF spectrometer, TOMBEE (TOF Mass analyzer for exotic BEam Experiment), with a liquid hydrogen target, CRYPTA (CRYogenic ProTon and Alpha target system), enables simultaneous measurements of several reaction channels: the reaction cross sections (sigma(R)), individual elemental fragmentation cross sections (sigma(Delta Z)), charge-changing cross sections (sigma(cc)), neutron-removal cross sections (sigma(-xn)), and charge-pickup cross sections (sigma(Delta Z+i)) for C-19,C-20.sigma(Delta Z), sigma(-xn), and sigma(Delta Z)+1 for C-18; and sigma(R) for Be-9. The present sigma(R) of Be-9 on proton, sigma(R) = 397 +/- 23 mb, measured in the inverse kinematics, was consistent with the previous measurements using proton beams at different laboratories. The sigma(R) of C-19 and C-20 on proton were determined to be sigma(R) = 754 +/- 22 mb and sigma(R) = 791 +/- 34 mb, respectively. Taking into account the beam energy and target dependence of sigma(R), the present sigma(R) are found to be considerably enhanced compared with those measured at around I GeV/nucleon. The sigma Delta Z+1 appears to increase with the mass number of the projectiles, and it significantly contributes to sigma(R) in the present energy range. The finite-range optical-limit and few-body Glauber model analyses were performed for sigma(R) to study the nuclear matter density distributions and to derive the relative strength of the s-wave components of the valence neutrons in C-19 and C-20. A neutron halo structure of C-19 is confirmed with an s-wave dominance of the valence neutron when the effect of the charge-pickup reaction is taken into account. The large sigma(-n) of C-19 and sigma(-2n) of C-20 also support the decoupled structures of C-18 + n and C-18 + 2n, respectively. The sigma(cc) of C-19 and C-20 agree with each other within their experimental uncertainties, which might indicate a similar proton density distribution in C-19 and C-20. The sigma(Delta Z) decreases monotonically without the even odd effect as the number of removed protons increases. (C) 2011 Elsevier B.V. All rights reserved.

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  • NMR-ON study of (PtNi)-Pt-197 Reviewed

    T. Ohtsubo, S. Ohya, Y. Masamori, T. Izumikawa, S. Muto, K. Nishimura

    HYPERFINE INTERACTIONS   198 ( 1-3 )   143 - 146   2010.6

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    Nuclear magnetic resonance measurement has been performed for Pt-197 oriented at 7 mK in a Ni host. The magnetic hyperfine splitting frequency at external magnetic fields of 0.2, 0.4 and 0.6 T were determined to be 229.4(1), 228.2(2) and 226.9(3) MHz, respectively. By using published values of the magnetic resonance frequency of (PtNi)-Pt-197 and magnetic moments determined by atomic beam methods, the hyperfine anomaly between the two isotopes is deduced to be (191)Delta(197) = +13(5)%. Which is extremely large compared to the theoretical value of +0.2%. Based on the same reasoning, the hyperfine anomaly with Pt-195, an isotope with the same spin and parity, is found to be (195)Delta(197) = +15(5)%. We conclude therefore that the published magnetic moment of Pt-197 is more likely in error. If we assume the hyperfine anomaly (195)Delta(197) = 0, a magnetic moment mu(Pt-191) = 0.45(1) mu(N) is obtained.

    DOI: 10.1007/s10751-010-0252-x

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  • Polarization creation in proton-rich P-28 via charge exchange reactions and measurement of its electric quadrupole moment Reviewed

    Matsuta K, Mihara M, Zhou D. M, Zheng Y. N, Nishimura D, Nagatomo T, Yuan D. Q, Momota S, Izumikawa T, Zuo Y, Fan P, Zhu S. Y, Ohtsubo T, Fukuda M, Namiki Y, Nagashima M, Minamisono T, Kameda D, Sumikama T, Kitagawa A, Kanazawa M, Torikoshi M, Sato S, Matsumiya R, Komurasaki J, Ishikawa D, Hirano H, Takahashi S, Kubo T, Yamada R, Shimbara Y, Nojiri Y, Suzuki T, Zhang X. Z, Alonso J. R, Krebs G. F, Symons T. J

    HYPERFINE INTERACTIONS   198 ( 1-3 )   147 - 151   2010.6

  • Magnetic hyperfine interaction of Fe-59 in nickel Reviewed

    Muto Suguru, Ohya Susumu, Ohtsubo Takashi, Izumikawa Takuji, Nishimura Katsuhiko

    HYPERFINE INTERACTIONS   197 ( 1-3 )   117 - 121   2010.4

  • Directional correlation of nuclear-collision probability for aligned beams of deformed nucleus Reviewed

    M. Fukuda, D. Nishimura, M. Takechi, M. Mihara, K. Matsuta, R. Matsumiya, T. Kuboki, K. Namihira, I. Hachiuma, T. Yamaguchi, T. Suzuki, Y. Okuma, M. Nagashima, T. Ohtsubo, Y. Shimbara, T. Izumikawa, K. Tanaka, T. Suda, S. Momota, T. Minamisono, W. Xu, G. W. Fan, S. Fukuda, S. Sato, M. Kanazawa, A. Kitagawa

    NUCLEAR PHYSICS A   834 ( 1-4 )   461C - 463C   2010.3

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    Interaction cross sections have been measured for spin-aligned nuclear beams of deformed nucleus. The spin-aligned nuclear beams were created by selecting the momentum of fragments produced in the projectile fragmentation of intermediate energy heavy-ion beams. The directional correlation of nuclear reaction probability for heavy-ion beams of deformed nucleus has been directly observed for the first time.

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  • Nuclear structure and fundamental symmetry studied through nuclear moments Reviewed

    K. Matsuta, M. Mihara, M. Fukuda, D. Nishimura, R. Matsumiya, T. Nagatomo, T. Ohtsubo, T. Izumikawa, S. Momota, D. M. Zhou, D. Q. Yuan, Y. N. Zheng, Y. Zuo, P. Fan, S. Y. Zhu, A. Kitagawa, M. Kanazawa, M. Torikoshi, S. Sato, K. Minamisono, T. Sumikama, M. Ogura, M. Tanigaki, A. Ozawa, T. Yamaguchi, T. Suzuki, K. Tanaka, Maya Takechi, T. Minamisono, Y. Nojiri, P. Levy, T. J. M. Symons, J. R. Alonso, G. F. Krebs

    NUCLEAR PHYSICS A   834 ( 1-4 )   424C - 427C   2010.3

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    We report recent situation of anomaly in spin expectation value found in C-9-Li-9 mirror pair, recent analysis of the nuclear spin in terms of orbital or intrinsic and proton or neutron, and a result from the study of the G-parity conservation law through beta-ray angular correlation in terms of its nuclear orientation.

    DOI: 10.1016/j.nuclphysa.2010.01.055

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  • Electromagnetic moments of F-22 Reviewed

    M. Mihara, K. Matsuta, J. Komurasaki, H. Hirano, D. Nishimura, S. Momota, T. Ohtsubo, T. Izumikawa, Y. Shimbara, T. Kubo, D. Kameda, Dongmei Zhou, Yongnan Zheng, Daqing Yuan, Shengyun Zhu, A. Kitagawa, M. Kanazawa, M. Torikoshi, S. Sato, T. Nagatomo, R. Matsumiya, D. Ishikawa, M. Fukuda, T. Minamisono, Y. Nojiri, J. R. Alonso, G. F. Crebs, T. J. M. Symons

    NUCLEAR PHYSICS A   834 ( 1-4 )   75C - 77C   2010.3

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    The magnetic dipole (mu) and electric quadrupole (Q) moments of short-lived nucleus F-22 (I-pi = 4(+), T-1/2 = 4.2 s) have been measured for the first time by means of the beta-NMR technique. A spin polarized F-22 beam was produced through the charge exchange reaction of Ne-22 and was implanted into single crysltals of NaF and MgF2 for mu and Q measurements, respectively. As a result,vertical bar mu(F-22)vertical bar = (2.69443 +/- 0.00039)mu(N) and vertical bar Q(F-22)vertical bar = (3 +/- 2) mb was obtained. These values are well reproduced by the shell model calculations.

    DOI: 10.1016/j.nuclphysa.2010.01.022

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  • Observation of a Large Reaction Cross Section in the Drip-Line Nucleus <SUP>22</SUP>C Reviewed International journal

    K. Tanaka, T. Yamaguchi, T. Suzuki, T. Ohtsubo, M. Fukuda, D. Nishimura, M. Takechi, K. Ogata, A. Ozawa, T. Izumikawa, T. Aiba, N. Aoi, H. Baba, Y. Hashizume, K. Inafuku, N. Iwasa, K. Kobayashi, M. Komuro, Y. Kondo, T. Kubo, M. Kurokawa, T. Matsuyama, S. Michimasa, T. Motobayashi, T. Nakabayashi, S. Nakajima, T. Nakamura, H. Sakurai, R. Shinoda, M. Shinohara, H. Suzuki, E. Takeshita, S. Takeuchi, Y. Togano, K. Yamada, T. Yasuno, M. Yoshitake

    Physical Review Letters   104 ( 6 )   062701 - 062701   2010.2

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    Reaction cross sections (sigma(R)) for 19C, 20C and the drip-line nucleus 22C on a liquid hydrogen target have been measured at around 40A MeV by a transmission method. A large enhancement of sigma(R) for 22C compared to those for neighboring C isotopes was observed. Using a finite-range Glauber calculation under an optical-limit approximation the rms matter radius of 22C was deduced to be 5.4+/-0.9 fm. It does not follow the systematic behavior of radii in carbon isotopes with N < or = 14, suggesting a neutron halo. It was found by an analysis based on a few-body Glauber calculation that the two-valence neutrons in 22C preferentially occupy the 1s(1/2) orbital.

    DOI: 10.1103/PhysRevLett.104.062701

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  • Decay curve study in a standard electron capture decay Reviewed

    D. Nishimura, M. Fukuda, T. Izumikawa, K. Kisamori, Y. Kuwada, K. Makisaka, R. Matsumiya, K. Matsuta, M. Mihara, T. Ohtsubo, T. Suzuki, A. Takagi, T. Yamaguchi, R. Yokoyama

    NUCLEAR PHYSICS TRENDS   1235   219 - +   2010

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    We have searched for a time-modulated decay in a standard electron capture experiment for (140)pr in order to confirm a report from GSI, where an oscillatory decay has been observed for hydrogen-like Pr-140 and Pm-142 ions in the cooler storage ring. Pr-140 has been produced with the Ce-140(p, n) reaction by a pulsed proton beam accelerated from the Van de Graaff accelerator at Osaka University. Resultant time dependence of the k(alpha) and K-beta X-ray intensities from the daughter shows no oscillatory behavior.

    DOI: 10.1063/1.3442597

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  • Density distribution of Ne-17 and possible shell-structure change in the proton-rich sd-shell nuclei Reviewed

    K. Tanaka, M. Fukuda, M. Mihara, M. Takechi, D. Nishimura, T. Chinda, T. Sumikama, S. Kudo, K. Matsuta, T. Minamisono, T. Suzuki, T. Ohtsubo, T. Izumikawa, S. Momota, T. Yamaguchi, T. Onishi, A. Ozawa, I. Tanihata, T. Zheng

    PHYSICAL REVIEW C   82 ( 4 )   044309   2010

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    Reaction cross sections (sigma(R)) for the proton drip-line nucleus Ne-17 have been measured on Be-9, C-12, and Al-27 targets at 64 and 42 MeV/nucleon by the transmission method. From the energy dependence of the sigma(R) including the high energy data, the density distribution of Ne-17 was deduced through a modified Glauber-type calculation. It is indicated that Ne-17 has a long tail in the density, consistent with a (2s(1/2))(2)-dominant configuration of two valence protons.

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  • Reaction cross section studies at NIRS and RIBF Reviewed

    M. Fukuda, M. Takechi, D. Nishimura, M. Mihara, R. Matsumiya, K. Matsuta, T. Minamisono, T. Ohtsubo, Y. Ohkuma, Y. Shimbara, S. Suzuki, R. Watanabe, T. Izumikawa, S. Momota, T. Suzuki, T. Yamaguchi, T. Kuboki, I. Hachiuma, K. Namihira, S. Nakajima, K. Kobayashi, T. Sumikama, Y. Miyashita, K. Yoshinaga, K. Tanaka, N. Aoi, N. Fukuda, N. Inabe, D. Kameda, T. Kubo, K. Kusaka, M. Lantz, T. Ohnishi, M. Ohtake, T. Suda, H. Takeda, Y. Yanagisawa, A. Yoshida, K. Yoshida, A. Ozawa, T. Moriguchi, H. Ohishi, Y. Itoh, Y. Ishibashi, K. Ogawa, Y. Yasuda, H. Geissel, M. Winkler, S. Sato, M. Kanazawa, A. Kitagawa

    TOURS SYMPOSIUM ON NUCLEAR PHYSICS AND ASTROPHYSICS - VII   1238   270 - +   2010

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    Reaction cross sections for stable nuclei at intermediate energies have been measured precisely and systematically. The data have been found to be reproduced nicely by the optical-limit approximation of Glauber theory modified to include the nucleon multiple scattering effect and the Fermi-motion effect. Applying this prescription, the nucleon density distribution of Ne-17 has been studied. The surface structure of B-8 and Be-11 has been also studied using this prescription and hydrogen targets. Using the RIBF that has just started application to studies of exotic nuclei, neutron-rich Ne isotopes around the Island of Inversion have been investigated through measurements of their interaction cross sections.

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  • Beta-NMR measurement of <sup>58</sup>Cu in Si

    M. Mihara, T. Izumikawa, H. Ueno, K. Matsuta, D. Nishimura, T. Nagatomo, T. Moriguchi, Y. Ito, D. Nagae, M. Fukuda, A. Yoshimi, K. Yamada, M. Takechi, Y. Ichikawa, S. Momota, Y. Hirayama, T. Ohtsubo, S. Suzuki, T. Kubo, Y. Namiki, A. Ozawa, Y. Ishibashi, H. Oishi, K. Suzuki, I. Hachiuma, K. Namihira, D. Horikawa, T. Minamisono, T. Yamaguchi, T. Kuboki, T. Suzuki, K. Satoh, Y. Kobayashi, K. Asahi, K. Matsukawa, K. Shirai

    Hyperfine Interactions   197 ( 1 )   143 - 147   2010

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    The β-NMR study of short-lived nucleus 58Cu (Iπ = 1+, T1/2 = 3.2 s) in Si has been performed. Spin polarization of 58Cu induced by the charge exchange reaction of 58Ni was observed in Si at 15 K. The 58Cu magnetic moment {pipe}μ[58Cu]{pipe} = (0.46±0.03)μN deduced from the β-NMR spectrum is consistent with the previous results on the laser spectroscopy. The present result shows that the 58Cu nucleus is promising as a new nuclear probe for the microscopic study of Cu impurities in Si. © 2010 Springer Science+Business Media B.V.

    DOI: 10.1007/s10751-010-0249-5

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  • Reaction cross sections at intermediate energies and Fermi-motion effect Reviewed

    Takechi M, Fukuda M, Mihara M, Tanaka K, Chinda T, Matsumasa T, Nishimoto M, Matsumiya R, Nakashima Y, Matsubara H, Matsuta K, Minamisono T, Ohtsubo T, Izumikawa T, Momota S, Suzuki T, Yamaguchi T, Koyama R, Shinozaki W, Takahashi M, Takizawa A, Matsuyama T, Nakajima S, Kobayashi K, Hosoi M, Suda T, Sasaki M, Sato S, Kanazawa M, Kitagawa A

    PHYSICAL REVIEW C   79 ( 6 )   2009.6

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    Precise measurements of the reaction cross sections (σR) for C12 on Be, C, and Al targets and Be11 on Be targets were performed in the energy range between 30 and 400 MeV/nucleon. The energy dependencies of σR for C12, Be11, and B8 were compared to Glauber-type calculations performed using reliable nucleon-density distributions that are supported by experimental data. It was found that the Glauber-type calculations, which include the higher-order multiple scattering effect, the finite-range effect, and the Fermi-motion effect of nucleons in the nucleus, seem to provide a good prescription relating σR at intermediate energies to a proper nucleon-density distribution. This method provides a powerful tool with which to study the nuclear surface structure through the σR measurements. © 2009 The American Physical Society.

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  • Nuclear structure of proton-rich unstable nucleus P-28 studied by g-factor measurement Reviewed

    Zheng Yong-Nan, Zhou Dong-Mei, Matsuta K, Mihara M, Fukuda M, Nishimura D, Komurasaki J, Ishikawa D, Matsumiya R, Nagatomo T, Izumikawa T, Takahashi S, Hirano H, Ohtsubo T, Momota S, Nojiri Y, Kitagawa A, Kanazawa M, Torikoshi M, Sato S, Minamisono T, Alonso J. R, Krebs G. F, Symons T. J. M, Yuan Da-Qing, Zuo Yi, Fan Ping, Suzuki T, Zhang Xi-Zhen, Zhu Sheng-Yun

    CHINESE PHYSICS C   33   215 - 217   2009.3

  • Measurement of the reaction cross section of <SUP>18</SUP>C and observations of fragments from <SUP>17</SUP>C and <SUP>18</SUP>C at 80A MeV Reviewed

    A. Ozawa, D. Q. Fang, M. Fukuda, N. Iwasa, T. Izumikawa, H. Jeppesen, R. Kanungo, R. Koyama, T. Ohnishi, T. Ohtsubo, W. Shinozaki, T. Suda, T. Suzuki, M. Takahashi, I. Tanihata, C. Wu, Y. Yamaguchi

    Physicla Review   C78   054313   2008.11

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  • Studies on the exotic structure of Al-23

    Fang De-Qing, Guo Wei, Ma Chun-Wang, Wang Kun, Yan Ting-Zhi, Ma Yu-Gang, Cai Xiang-Zhou, Shen Wen-Qing, Ren Zhong-Zhou, Sun Zhi-Yu, M. Hosoi, T. Izumikawa, R. Kanungo, S. Nakajima, T. Ohnishi, T. Ohtsubo, A. Ozawa, T. Suda, K. Sugawara, T. Suzuki, A. Takisawa, K. Tanaka, T. Yamaguchi, I. Tanihata

    CHINESE PHYSICS C   32   34 - 37   2008.10

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    The longitudinal momentum distribution (P-//) of fragments after one-proton removal from Al-23 and reaction cross sections (sigma(R)) for Al-23,Al-24 on carbon target at 74A MeV have been measured simultaneously. An enhancement in sigma(R) is observed for Al-23 compaxed with Al-24. The full width at half maximum of the P-// distribution for Mg-22 fragments has been determined to be 232 +/- 28 MeV/c. Analysis of P-// using the Few-Body Glauber Model indicates a dominant d-wave configuration for the valence proton in the ground state of Al-23. The exotic structure in Al-23 is discussed.

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  • Shallow nitrogen acceptor in TiO(2) studied by beta-NMR spectroscopy Reviewed

    M. Mihara, R. Matsumiya, K. Shimomura, K. Matsuta, M. Fukuda, D. Ishikawa, J. Komurasaki, D. Nishimura, T. Nagasawa, T. Izumikawa, T. Minamisono

    PHYSICA B-CONDENSED MATTER   401   430 - 432   2007.12

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    The local electronic structure of substitutional nitrogen impurity in rutile TiO(2) was studied by means of the beta-NMR technique. A short-lived 0 emitter (12)N (I = 1, T(1/2) = 11 ms) was implanted into a rutile single crystal as a probe nucleus to detect double-quantum NMR spectrum. The result shows the existence of a small hyperfine interaction at low temperatures due to paramagnetic states localized at oxygen substitutional site, which suggests that a substitutional nitrogen atom acts as a shallow acceptor in rutile TiO(2). (C) 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.physb.2007.08.204

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  • Magnetic moment of proton halo nucleus (28)P Reviewed

    Zhou Dongmei, Zheng Yongnan, Matsuta K, Mihara M, Fukuda M, Nishimura D, Komurasaki J, Ishikawa D, Matsumiya R, Nagatomo T, Izumikawa T, Takahashi S, Hirano H, Ohtsubo T, Momota S, Nojiri Y, Kitagawa A, Kanazawa M, Torikoshi M, Sato S, Minamisono T, Alonso J. R, Krebs G. F, Symons T. J. M, Yuan Daqing, Zuo Yi, Fan Ping, Suzuki T, Zhang Xizhen, Zhu Shengyun

    HYPERFINE INTERACTIONS   180 ( 1-3 )   37 - 42   2007.11

  • Magnetic moment of (48)Sc Reviewed

    T. Ohtsubo, Y. Kawamura, S. Ohya, T. Izumikawa, K. Nishimura, S. Muto, T. Shinozuka

    HYPERFINE INTERACTIONS   180 ( 1-3 )   79 - 83   2007.11

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    Nuclear magnetic resonances were measured for (48)Sc and (44m)Sc oriented at 8 mK in an Fe host metal. The magnetic hyperfine splitting frequencies at an external magnetic field of 0.2 T were determined to be 63.22(11) MHz and 64.81(1) MHz for (48)Sc and (44m)Sc, respectively. With the known magnetic moment of mu((44m)Sc) = + 3.88 (1) mu(N), the magnetic moment of (48)Sc is deduced as vertical bar mu((48)Sc)vertical bar = 3.785 (12) mu(N). The measured magnetic moment of (48)Sc is discussed in terms of the shell model using the effective interactions.

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  • Hyperfine anomalies of Sc isotopes (A=44, 44 m, 46 and 47) in iron Reviewed

    S. Ohya, T. Ohtsubo, T. Izumikawa, K. Nishimura, S. Muto, T. Shinozuka

    HYPERFINE INTERACTIONS   180 ( 1-3 )   55 - 60   2007.11

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    Nuclear magnetic resonance on oriented nuclei (NMR-ON) on Sc isotopes (A = 44, 44 m, 46, 47) in Fe were performed. Using the known magnetic moments the magnetic hyperfine fields were determined. The hyperfine anomalies of various Sc were deduced; (44)Delta(47) = 0.0 (12) %, (44)m Delta(47) = 1.2 (4) %, (46)Delta(47) = 2.7 (8) %. The measured hyperfine anomalies are briefly discussed based on the shell model.

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  • Magnetic moment of short lived beta-emitter (24m)Al Reviewed

    Nishimura D, Komurasaki J, Matsuta K, Mihara M, Matsumiya R, Momota S, Ohtsubo T, Izumikawa T, Hirano H, Kitagawa A, Kanazawa M, Torikoshi M, Sato S, Fukuda M, Ishikawa D, Minamisono T, Watanabe R, Kubo T, Nojiri Y, Alonso J. R, Krebs G. F, Symons T. J

    HYPERFINE INTERACTIONS   180 ( 1-3 )   71 - 74   2007.11

  • Polarization of Ne-23, Al-24m,Al-25 and P-28 produced through single nucleon pickup and charge-exchange reactions at 100 AMeV

    T. Ohtsubo, H. Hirano, S. Takahashi, K. Matsuta, M. Mihara, M. Fukuda, T. Nagatomo, T. Izumikawa, S. Momota, D. Nishimura, J. Komurasaki, D. Ishikawa, D. M. Zhou, Y. N. Zheng, S. Y. Zhu, A. Kitagawa, M. Kanazawa, M. Torikoshi, S. Sato, T. Minamisono, Y. Nojiri, R. Matsumiya, T. Sumikama, K. Tanaka, K. Yamada, A. Ozawa, T. Suzuki, T. Yamaguchi, S. Nakajima, K. Yoshida, Y. Nakashima, H. Fujiwara, S. Kumashiro, M. Ota, D. Shinojima, H. Tanaka, T. Yasuno, K. Muranaka, T. Maemura, A. Chiba, S. A. Pahlovy, M. Nagao, R. Watanabe, T. Kubo, I. Tanihata, M. Takechi, K. Minamisono, J. R. Alonso, G. F. Krebs, T. J. M. Symons

    HYPERFINE INTERACTIONS   180 ( 1-3 )   85 - 89   2007.11

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    We measured the polarization of the beta-emitting Ne-23 (I-pi = 5/2(+), T-1/2 = 37.24 s) and Al-25(I-pi = 5/2(+), T-1/2 = 7.18 s) produced through the one nucleon pickup reactions and Al-24m(I-pi = 1(+), T-1/2 = 131 ms, E-ex = 426 keV) and P-28(I-pi = 3(+), T-1/2 = 270 ms) produced through charge-exchange reactions in the intermediate energy heavy ion collisions. We compared them with those from the projectile fragmentation process. The larger polarization seems to persistently be positive throughout the momentum distribution, and sharper momentum distributions suggest that nuclear friction mechanism is responsible for the polarization phenomena.

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  • Hyperfine interaction of Al-25 in alpha-Al2O3 and its quadrupole moment Reviewed

    K. Matsuta, M. Mihara, T. Nagatomo, R. Matsumiya, S. Momota, T. Ohtsubo, T. Izumikawa, H. Hirano, S. Takahashi, D. Nishimura, J. Komurasaki, A. Kitagawa, M. Kanazawa, M. Torikoshi, S. Sato, M. Fukuda, T. Minamisono, T. Sumikama, K. Tanaka, M. Takechi, D. Ishikawa, S. A. Pahlovy, M. Nagao, Y. Nojiri, J. R. Alonso, G. F. Krebs, T. J. M. Symons

    HYPERFINE INTERACTIONS   180 ( 1-3 )   65 - 69   2007.11

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    The electric quadrupole (Q) moment of short-lived nucleus Al-25 (I-pi = 5/2(+), T-1/2 = 7.18 s) has been measured for the first time, by means of the beta-NQR technique. The spin polarization of Al-25 was produced in heavy ion collisions and was kept in a alpha-Al2O3 single crystal for as long as 2 s and the quadrupole coupling frequency was obtained as vertical bar eqQ/h(Al-25 in Al2O3)vertical bar = (4.05 +/- 0.30) MHz. From the result, the Q moment was determined as vertical bar Q(Al-25)vertical bar = (240 +/- 20) mb. The present

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  • Examining the exotic structure of the proton-rich nucleus Al-23 Reviewed

    D. Q. Fang, W. Guo, C. W. Ma, K. Wang, T. Z. Yan, Y. G. Ma, X. Z. Cai, W. Q. Shen, Z. Z. Ren, Z. Y. Sun, J. G. Chen, W. D. Tian, C. Zhong, M. Hosoi, T. Izumikawa, R. Kanungo, S. Nakajima, T. Ohnishi, T. Ohtsubo, A. Ozawa, T. Suda, K. Sugawara, T. Suzuki, A. Takisawa, K. Tanaka, T. Yamaguchi, I. Tanihata

    PHYSICAL REVIEW C   76 ( 3 )   2007.9

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    The longitudinal momentum distribution (P-//) of fragments after one-proton removal from Al-23 and reaction cross sections (sigma(R)) for Al-23,Al-24 on a carbon target at 74A MeV have been measured. The Al-23,Al-24 ions were produced through projectile fragmentation of 135A MeV Si-28 primary beam using the RIPS fragment separator at RIKEN. P-// is measured by a direct time-of-flight (TOF) technique, while sigma(R) is determined using a transmission method. An enhancement in sigma(R) is observed for Al-23 compared with Al-24. The P-// for Mg-22 fragments from Al-23 breakup has been obtained for the first time. FWHM of the distributions has been determined to be 232 +/- 28 MeV/c. The experimental data are discussed by using the Few-Body Glauber model. Analysis of P-// demonstrates a dominant d-wave configuration for the valence proton in ground state of Al-23, indicating that Al-23 is not a proton halo nucleus.

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  • Temperature dependence of the lattice locations of boron implanted in germanium Reviewed

    T. Izumikawa, D. Shinojima, S. Takahashi, M. Mihara, K. Matsuta, M. Fukuda, T. Ohtsubo, S. Ohya, T. Minamisono

    HYPERFINE INTERACTIONS   178 ( 1-3 )   79 - 82   2007.7

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    The beta-NMR of the probe atom (12)B implanted in In-doped germanium was measured as a function of temperature. As a result, three resonances were observed: sharp and broad resonances around the Larmor frequency and a resonance split by the electric quadrupole interaction. It was found that the appearance of the resonances is similar to the case of Si host (Izumikawa et al. Hyperfine Interact. 136/137:559-605, 2001). The quadrupole coupling constant for the split resonance was deduced as vertical bar eqQ/h vertical bar = 252(3) kHz under the assumption that it has &lt; 111 &gt; axial symmetry. And furthermore, assuming that the defect atom jumps thermally between the identical defect sites, the activation energy of the jump was deduced as 0.4 +/- 0.1 eV.

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  • Electric field gradient at (12)N implanted into ZnO Reviewed

    R. Matsumiya, M. Mihara, M. Ogura, K. Matsuta, M. Fukuda, T. Izumikawa, T. Minamisono

    HYPERFINE INTERACTIONS   178 ( 1-3 )   63 - 67   2007.7

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    The nuclear quadrupole interaction of short-lived beta-emitter (12)N(I = 1, T(1/2) = 11 ms) implanted into a ZnO single crystal has been studied by means of the beta-NMR method. We have observed a quadrupole splitting of (12)N in ZnO at room temperature, from which the electric field gradient (EFG) q = +(8.6 +/- 1.1) x 10(19) V/m(2) was deduced assuming axially symmetric EFG with respect to the crystalline c axis. A first principle calculation does not reproduce the data under assumption of the lattice location of (12)N at the oxygen substitutional site.

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  • Spin-lattice relaxation of Al-25 and P-28 in Pt Reviewed

    M. Mihara, K. Matsuta, D. Nishimura, T. Nagatomo, R. Matsumiya, S. Momota, T. Ohtsubo, T. Izumikawa, D. M. Zhou, Y. N. Zheng, M. Ogura, H. Akai, J. Komurasaki, M. Fukuda, D. Ishikawa, Y. Nojiri, H. Hirano, S. Takahashi, R. Watanabe, T. Kubo, S. Y. Zhu, A. Kitagawa, M. Kanazawa, S. Sato, M. Torikoshi, T. Sumikama, T. Minamisono, J. R. Alonso, G. F. Krebs, T. J. M. Symons

    HYPERFINE INTERACTIONS   178 ( 1-3 )   83 - 86   2007.7

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    The spin-lattice relaxation times T-1 for short-lived beta emitters Al-25(I = 5/2, T-1/ 2 = 7.2 s) and P-28(I = 3, T-1/2 = 270 ms) in Pt were measured by means of the beta-NMR technique. As a result, T-1[Al-25 in Pt] = (1.1(- 0.3)(+0.7)) s and T-1[P-28 in Pt] &gt; 0.5 s were obtained at temperatures of 17 and 20 K, respectively. The Knight shifts were estimated from the Korringa relation, which were evaluated by comparing to the first principle calculations.

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  • Electronic structure of substitutional nitrogen impurity in TiO2 studied by the beta-NMR method Reviewed

    M. Mihara, R. Matsumiya, K. Matsuta, K. Shimomura, M. Fukuda, J. Komurasaki, D. Nishimura, D. Ishikawa, T. Nagasawa, T. Izumikawa, T. Minamisono

    HYPERFINE INTERACTIONS   178 ( 1-3 )   69 - 72   2007.7

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    In order to study the local electronic structure of nitrogen impurity in rutile TiO(2), we have measured double-quantum NMR spectra of short lived beta-emitter (12)N(I = 1, T (1/2) = 11 ms) implanted into a rutile single crystal by means of the beta-NMR technique. The resonance line obtained at room temperature is well accounted for by the second order shift due to the quadrupole interaction at the oxygen substitutional site. The spectrum at 25 K has shown the other lines than the central diamagnetic line shifted by 10-15 kHz to both sides, which has been already shown in the previous data obtained with a different crystal orientation and an external field. The present results supports the existence of a paramagnetic state formed by the substitutional nitrogen impurities.

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  • New study of reaction cross sections and the nucleon density distribution Reviewed

    Fukuda M, Takechi M, Mihara M, Matsumiya R, Matsuta K, Minamisono T, Ohtsubo T, Izumikawa T, Momota S, Suzuki T, Yamaguchi T, Nakajima S, Kobayashi K, Tanaka K, Suda T, Sato S, Kanazawa M, Kitagawa A

    TOURS SYMPOSIUM ON NUCLEAR PHYSICS VI   891   181 - +   2007

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    Reaction cross sections (σR) for 12C beam on 9Be, 12C, and 27Al targets and for 11Be beam on 9Be target were precisely measured systematically in the intermediate energy range. It is indicated that these all σR data were successfully reproduced by a modified Glauber calculation, which is expected to be applied for the determination of density distributions of other exotic nuclei. © 2007 American Institute of Physics.

    DOI: 10.1063/1.2713515

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  • Precise studies of nucleon density distribution of He-6 and He-8 Reviewed

    M. Takechi, M. Fukuda, M. Mihara, R. Matsumiya, K. Matsuta, T. Minamisono, T. Ohtsubo, T. Izumikawa, S. Momota, T. Suzuki, T. Yamaguchi, S. Nakajima, K. Kobayashi, K. Tanaka, T. Suda, S. Sato, M. Kanazawa, A. Kitagawa

    TOURS SYMPOSIUM ON NUCLEAR PHYSICS VI   891   187 - +   2007

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    Reaction cross sections (sigma(R)) for He-6 and He-8 have been measured on Be-9, C-12, and Al-27 targets at intermediate energies. We deduced the nucleon density distribution of He-6 and He-8 through our data with the use of modified Glauber calculation. This method is a sensitive probe for dilute nucleon density and we successfully clarified the halo structure of He-6 and the neutron skin-type density distribution of He-8.

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  • Polarization and momentum distribution of Ne-23 and Al-25 produced in one nucleon pickup reactions at 100A MeV

    K. Matsuta, T. Nagatomo, M. Mihara, R. Matsumiya, S. Momota, T. Ohtsubo, T. Izumikawa, H. Hirano, S. Takahashi, A. Kitagawa, M. Kanazawa, M. Torikoshi, S. Sato, M. Fukuda, T. Minamisono, A. Ozawa, K. Yamada, T. Suzuki, T. Yamaguchi, S. Nakajima, T. Sumikama, K. Tanaka, K. Yoshida, Y. Nakashima, H. Fujiwara, S. Kumashiro, M. Ota, D. Shinojima, H. Tanaka, T. Yasuno, K. Muranaka, T. Maemura, A. Chiba, S. A. Pahlovy, M. Nagao, I. Tanihata, K. Minamisono, Y. Nojiri, J. R. Alonso, G. F. Krebs, T. J. M. Symons

    PROCEEDINGS OF THE 17TH INTERNATIONAL SPIN PHYSICS SYMPOSIUM   915   837 - +   2007

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    We measured the polarization of the beta-emitting Ne-23 (I-pi = 5/2(+), T-1/2 = 37.24 s) and 25Al(I-pi = 5/2(+), T-1/2 = 7.18 s), produced through the one nucleon pickup reactions in the intermediate energy heavy ion collisions, and was compared with those from the projectile fragmentation process. The larger polarization which seems to persistently be positive throughout the momentum distribution, and sharper momentum distributions suggest nuclear friction mechanism to be responsible for the polarization phenomena. Using such a large polarization, magnetic moment of 23Ne and the quadrupole moment of 25AI were measured. The obtained values are vertical bar mu(Ne-23)vertical bar = 1.0817(9),mu(N) and vertical bar Q(Al-25)vertical bar = (240 +/- 20) mb.

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  • Study of the Neutron Halo and Skin Structure of ^6He and ^8He(International Workshop on Nuclear Structure-New Pictures in the Extended Isospin Space(NS07)-)

    Takechi M., Fukuda M., Mihara M., Matsumiya R., Komurasaki J., Nishimura D., Ishikawa D., Matsuta K., Minamisano T., Izumikawa T., Ohtsubo T., Matsuyama T., Momota S., Yamaguchi T., Nakajima S., Kobayashi K., Suzuki T., Tanaka K., Suda T., Sato S., Kanazawa M., Kitagawa A.

    Soryushiron Kenkyu Electronics   115 ( 3 )   C107   2007

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  • Nuclear moments of ^<24m 25>Al and ^<28>P(International Workshop on Nuclear Structure-New Pictures in the Extended Isospin Space(NS07)-)

    MATSUTA K., MIHARA M., NAGATOMO T., MATSUMIYA R., ZHOU D.M., ZHENG Y.N., ZHU S.Y., MOMOTA S., OHTSUBO T., IZUMIKAWA T., HIRANO H., TAKAHASHI S., NISHIMURA D., KOMURASAKI J., KITAGAWA A., KANAZAWA M., TORIKOSHI M., SATO S., FUKUDA M., ISHIKAWA D., MINAMISONO T., SUMIKAMA T., TANAKA K., TAKECHI M., WATANABE R., KUBO T, PAHLOVY S.A., NAGAO M., NOJIRI Y., ALONSO J.R., KREBS G.F., SYMONS T.J.M

    Soryushiron Kenkyu Electronics   115 ( 3 )   C89   2007

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    DOI: 10.24532/soken.115.3_C89

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  • Study of exoticness of proton-rich nuclei Al-23 and it's neighboring nuclei Reviewed

    Ma Chun-Wang, Fang De-Qing, Guo Wei, Wang Kun, Yan Ting-Zhi, Ma Yu-Gang, Cai Xiang-Zhou, Shen Wen-Qing, Sun Zhi-Yu, Ren Zhong-Zhou, Chen Jin-Gen, Tian Wen-Dong, Wang Hong-Wei, Ma Er-Jun, Liu Gui-Hua, Shi Yu, Su Qian-Min, Zhong Chen, M. Hosoi, T. Izumikawa, R. Kanungo, S. Nakajima, T. Ohnishi, T. Ohtsubo, T. Suda, K. Sugawara, T. Suzuki, A. Ozawa, A. Takisawa, K. Tanaka, T. Yamaguchi, I. Tanihata

    HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION   30   186 - 188   2006.12

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    We measured the reaction cross sections(sigma(R)) and parallel momentum distributions(P-//) of Al-23 and it's neighboring nuclei at RIKEN-RIPS. An enhanced sigma(R) of Al-23 is observed, which is consistent with the previous experimental result. And the P-// of fragment from the projectile breakup nuclei have been obtained at the same time. We discuss our experimental data under the Few-Body Glauber Model. The P-// of Al-23 shows the ground state of the valence proton is a d-wave, which is consistent with the recent measurement of Al-23's g factor. To explain the experimental sigma(R) and P-// of Al-23 at the same time, we suggest an enlarged core of Al-23.

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  • Measurements of reaction cross section and fragment momentum distribution for N=10 proton-rich isotones Reviewed

    W. Guo, D. Q. Fang, Y. G. Ma, C. W. Ma, K. Wang, T. Z. Yan, X. Z. Cai, W. Q. Shen, Z. Y. Sun, Z. Z. Ren, J. G. Chen, J. H. Chen, G. H. Liu, E. J. Ma, G. L. Ma, Y. Shi, Q. M. Su, W. D. Tian, H. W. Wang, C. Zhong, J. X. Zuo, M. Hosoi, T. Izumikawa, R. Kanungo, S. Nakajima, T. Ohnishi, T. Ohtsubo, A. Ozawa, T. Suda, K. Sugawara, T. Suzuki, A. Takisawa, K. Tanaka, T. Yamaguchi, I. Tanihata

    INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS   15 ( 7 )   1523 - 1530   2006.10

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    The longitudinal momentum (p(//)) distributions of fragments after one-proton removal and reaction cross sections (sigma R) for several N = 10 isotones at intermediate energy (similar to 70A MeV) have been measured simultaneously at the RIken Projectile fragment Separator (RIPS). p(//) was measured using a direct time-of-flight (TOF) technique, while sigma(R) was determined using a transmission method. An enhanced sigma(R) is observed for Al-23 comparing with its neighbors. The p(//) distribution for Mg-22 fragments from Al-23 one-proton removal reaction has been obtained for the first time. The experimental data are discussed within a Few Body Glauber (FBG) framework. Analysis of p// indicates a dominant d-wave component in the ground state of Al-23. This agrees with recent experimental results. We also suggest the possibility of an enlarged Mg-22 core for proton-rich nucleus Al-23.

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  • Measurement of the spin and magnetic moment of Al-23

    A. Ozawa, K. Matsuta, T. Nagatomo, M. Mihara, K. Yamada, T. Yamaguchi, T. Ohtsubo, S. Momota, T. Izumikawa, T. Sumikama, Y. Nakashima, H. Fujiwara, S. Kumashiro, R. Matsumiya, M. Ota, D. Shinojima, H. Tanaka, T. Yasuno, S. Nakajima, T. Suzuki, K. Yoshida, K. Muranaka, T. Maemura, A. Chiba, Y. Utsuno, M. Fukuda, K. Tanaka, I. Tanihata, Y. Nojiri, T. Minamisono, J. R. Alonso, G. F. Krebs, T. J. M. Symons

    PHYSICAL REVIEW C   74 ( 2 )   2006.8

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    For the first time, we obtained the g factor for the ground state of Al-23 by use of a beta-NMR measurement. Al-23 has a small proton separation energy and is a potential proton-halo candidate. The obtained g factor, vertical bar g vertical bar=1.557 +/- 0.088, clearly shows the spin and parity, J(pi)=5/2(+), for Al-23, which is the same as that of its mirror partner, Ne-23. The possible nuclear structure of Al-23 is also discussed.

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  • Measurements of the interaction cross-sections for <sup>14</sup>Be and <sup>14,15</sup>B as projectiles with a new scheme at RIBLL

    A. Ozawa, Y. Z. Cai, Z. Q. Chen, M. Chiba, D. Q. Fang, Z. G. Guo, T. Izumikawa, J. X. Li, R. S. Mao, T. Ohnishi, W. Q. Shen, T. Suda, Z. Y. Sun, T. Suzuki, I. Tanihata, W. D. Tian, J. S. Wang, M. Wang, Y. B. Wei, G. Q. Xiao, Z. G. Xiao, T. Yamaguchi, Y. Yamaguchi, A. Yoshida, W. L. Zhan, H. Y. Zhang, T. Zheng, C. Zhong

    Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms   247 ( 2 )   155 - 160   2006.6

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    We have measured the interaction cross-sections (σI) for light neutron-rich nuclei (14Be, 14,15B) at ∼50A MeV at the Radioactive Ion Beam Line in Lanzhou (RIBLL) in IMP with a new scheme. In this scheme, a carbon reaction target was installed at the intermediate focusing point at RIBLL. This scheme allowed us to identify particles before and after the reaction target unambiguously. However, this scheme might suffer a large loss of transmission efficiency in the second half of RIBLL. We checked this effect by changing the emittance of the RI beams. The results showed that a correction of the transmission efficiency is needed to deduce σI. We performed a Monte Carlo type simulation and tried to deduce σI for the above nuclei. Finally, we obtained reasonable σI although their error bars were fairly large. The results were compared with calculations by an energy-dependent semi-empirical formula. © 2006 Elsevier B.V. All rights reserved.

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  • Lattice location of B-12 implanted in Si

    T Izumikawa, K Matsuta, K Sato, T Miyake, M Mihara, M Fukuda, SY Zhu, T Minamisono

    PHYSICA B-CONDENSED MATTER   376   193 - 195   2006.4

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    The beta-NMR study of B-12 implanted in semiconductor Si was performed to understand dynamic behaviour of the defects. The temperature dependences of the fraction of the implantation sites were measured under two different external magnetic fields. The measurements were well explained by the fast spin-lattice relaxation due to the thermal atomic jump between the identical defect sites. The activation energy of the jump was also deduced as 0.40 +/- 0.04 eV under the external magnetic field of 3.5 kOe. (c) 2005 Elsevier B.V. All rights reserved.

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  • Microscopic observation of impurities in TiO2 using radioactive nuclear probes

    M Mihara, S Kumashiro, H Fujiwara, R Matsumiya, K Matsuta, Y Nakashima, YN Zheng, M Ogura, T Sumikama, T Nagatomo, K Minamisono, M Fukuda, T Izumikawa, T Minamisono

    PHYSICA B-CONDENSED MATTER   376   955 - 958   2006.4

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    The dynamical behavior of nitrogen impurity in TiO2 was examined microscopically by means of the beta-NMR technique. Short-lived radioactive nucleus N-12(I = 1, T-1/2 = 11 ms) was implanted into a single crystal of rutile TiO2 and its NMR was observed at 300-900 K through the beta-ray detection. Spin-lattice relaxation due to a fluctuation of the nuclear quadrupole interaction induced by an atomic motion was observed for oxygen substitutional and interstitial lattice sites. The corresponding amplitude of the fluctuation for the substitutional site was found to be much smaller than the static quadrupole field. From this result and the deduced activation energy, we infer that a substitutional N-12 atom remains in the site and the observed spin-lattice relaxation is attributed to the motion of some kind of defects. The possibility of interstitial nitrogen diffusion is also discussed. (c) 2005 Elsevier B.V. All rights reserved.

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  • Measurements of the reaction cross sections and momentum distributions for Al-23 neighbouring nuclei

    K. Wang, D. Q. Fang, W. Guo, Y. G. Ma, C. W. Ma, T. Z. Yan, X. Z. Cai, W. Q. Shen, Z. Y. Sun, Z. Z. Ren, J. G. Chen, G. H. Liu, E. J. Ma, Y. Shi, Q. M. Su, W. D. Tian, H. W. Wang, C. Zhong, M. Hosoi, T. Izumikawa, R. Kanungo, S. Nakajima, T. Ohnishi, T. Ohtsubo, A. Ozawa, T. Suda, K. Sugawara, T. Suzuki, A. Takisawa, K. Tanaka, T. Yamaguchi, K. Tanaka, T. Yamaguchi, I. Tanihata

    NUCLEAR PHYSICS TRENDS   865   63 - +   2006

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    The reaction cross sections and momentum distributions for Al-23 and its neighbouring nuclei have been measured at the Riken Projectile Fragment Separator (RIPS). The primary beam of 135 A MeV Si-28 was used to produce the secondary beams. The measurement of sigma(R) was carried out by using a transmission-type method. sigma(R) was determined by the ratios between incident and outgoing particles without reaction from both target-in and target-out measurements. P-// of fragment from breakup reactions was determined from the measured TOF between F2 and F3. An enhancement is observed in sigma(R) for Al-23 compared to its neighbors. The P-// of Mg-22 fragments from Al-23 breakup have been obtained. The width of the distributions is found to be consistent with prediction by the Goldhaber Model. The experimental data are discussed in the framework of Glauber model. The analysis of P-// indicates a dominant d-wave component in the ground state of Al-23. This confirms the result of a recent magnetic moment measurement which indicates that the valence proton is in d-wave.

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  • Nuclear structure study through nuclear moments of mirror pairs

    K. Matsuta, T. Nagatomo, A. Ozawa, M. Mihara, R. Matsumiya, K. Yamada, T. Yamaguchi, T. Ohtsubo, S. Momota, T. Izumikawa, T. Sumikama, Y. Nakashima, H. Fujiwara, S. Kumashiro, M. Ota, D. Shinojima, H. Tanaka, T. Yasuno, S. Nakajima, T. Suzuki, K. Yoshida, K. Muranaka, T. Maemura, A. Chiba, Y. Utsuno, M. Fukuda, K. Tanaka, A. Kitagawa, M. Torikoshi, M. Kanazawa, S. Sato, M. Takechi, T. Miyake, M. Ogura, I. Tanihata, Y. Nojiri, K. Minamisono, T. Minamisono, J. R. Alonso, G. F. Krebs

    NUCLEAR PHYSICS TRENDS   865   153 - +   2006

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    beta-NMR spectra have been observed for Cl-33, Al-23 and Ne-23. As a result, the magnetic moment of Cl-33 was determined as vertical bar mu(Cl-33)vertical bar = 0.7549(3) mu(N). Combined with the known magnetic moment of S-33 and the ft-value of the Cl-33 beta decay, the orbital angular momenta and the intrinsic spins for proton and neutron groups, are deduced separately as < l(p)> = 1.3, < I-n > = 0.3, < S-p > = -0.12 and < S-n > = -0.02. The magnetic moment of Al-23, and that of Ne-23 were determined as vertical bar mu(Al-23)vertical bar = 3.89(22) mu(N) and vertical bar mu(Ne-23)vertical bar = 1.0817(9) mu(N), respectively. As a result, the orbital angular momentum < l(z)> and the intrinsic spin < S-z > were deduced to be 2.09(29) and 0.41(29), respectively. Combined with theft-value of the 0 transition from the ground state of Al-23 to the excited state of Mg-23, proton and neutron contributions are separated. The obtained expectation values < l(p)>, < l(n)>, < S-p > and < S-n > are compared with the shell model predictions.

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  • High-rate particle identification of high-energy heavy ions using a tilted electrode gas ionization chamber Reviewed

    K Kimura, T Izumikawa, R Koyama, T Ohnishi, T Ohtsubo, A Ozawa, W Shinozaki, T Suzuki, M Takahashi, Tanihata, I, T Yamaguchi, Y Yamaguchic

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   538 ( 1-3 )   608 - 614   2005.2

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    A high-rate particle identification device for high-energy heavy ions has been developed which utilizes a stacked configuration of grid-less parallel plate gas ionization chambers with thin anode-cathode gaps. The high-rate capability of this chamber was realized by adopting bipolar shaping of anode signals and by the suitable choice of a counter gas. Z-resolutions of 0.2-0.3 were obtained for nuclear fragments of Ar-40 at 95 A MeV with an intensity as high as 10(6) cps. (C) 2004 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nima.2004.08.100

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  • Reaction cross sections for stable nuclei and nucleon density distribution of proton drip-line nucleus 8B Reviewed

    M. Takechi, M. Fukuda, M. Mihara, T. Chinda, T. Matsumasa, H. Matsubara, Y. Nakajima, K. Matsuta, T. Minamisono, R. Koyama, W. Shinozaki, M.Takahashi, A. Takizawa, T. Ohtsubo, T.Suzuki, T. Izumikawa

    Eur. Phy. J.   A ( 25 )   223 - 224   2005

  • Nucleon density distribution of proton drip-line nucleus Ne-17 Reviewed

    K Tanaka, M Fukuda, M Mihara, M Takechi, T Chinda, T Sumikama, S Kudo, K Matsuta, T Minamisono, T Suzuki, T Ohtubo, T Izumikawa, S Momota, T Yamaguchi, T Onishi, A Ozawa, Tanihata, I, Z Tao

    EUROPEAN PHYSICAL JOURNAL A   25   221 - 222   2005

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    Ne-17 is one of the candidates for proton halo nuclei. To study the halo structure of Ne-17, we measured the reaction cross-sections (sigma(R)) and deduced the density distribution of Ne-17 through the energy dependence of sigma(R). From the deduced density, it is found that Ne-17 has a long density tail which is consistent with the picture of two valence protons of Ne-17 occupying the 2s(1/2) orbital.

    DOI: 10.1140/epjad/i2005-06-182-1

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  • Density distribution of proton drip-line nucleus Ne-17

    K Tanaka, M Fukuda, M Mihara, M Takechi, T Chinda, T Sumikama, S Kudo, K Matsuta, T Minamisono, T Ohtubo, T Suzuki, S Momota, T Izumikawa, T Yamaguchi, T Onishi, A Ozawa, Tanihata, I, Z Tao

    NUCLEAR PHYSICS A   746   532C - 535C   2004.12

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    Ne-17 is one of the candidates for a proton-halo nucleus. In order to make the halo structure of Ne-17 clear, we studied the density distribution of Ne-17 through the reaction cross sections sigma(R). As a consequence, it is suggested from sigma(R) data that Ne-17 has a long tail in the density, which is consistent with an occupancy of the 2s(1/2) orbital by the two valence protons.

    DOI: 10.1016/j.nuclphysa.2004.09.154

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  • Large hyperfine anomaly between <sup>91</sup>Y and <sup>91m</sup>Y in Fe Reviewed

    K. Nishimura, S. Ohya, T. Ohtsubo, I. Sato, J. Goto, T. Izumikawa, M. Tanigaki, A. Taniguchi, Y. Ohkubo, Y. Kawase, S. Muto

    Physical Review B - Condensed Matter and Materials Physics   70 ( 13 )   132405-1-132405-4   2004.10

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    Nuclear magnetic resonance on oriented nuclei was carried out using a sample of dilute 91Y and 91mY in iron prepared by ion implantation of radioactive precursor Rb isotopes. For 91YFe, the beta-ray asymmetry was utilized to measure the magnetic hyperfine interaction frequency, ν0=73.566(22) MHz, which led to the magnetic hyperfine field, BHF=-29.4(2)T, by using the known nuclear g-factor. The field shift of the resonant frequency, dν0/dB0=-2.501(17) MHz/T for 91YFe, implies a Knight shift value, K=0.0(8)%. The interaction frequency and the field shift of 91mYFe obtained via the gamma-ray detection confirmed the previously reported results. A ratio of the measured ν0 and dν0/dB0 values for both 91YFe and 91mYFe gave rise to the hyperfine anomaly, 91Δ91m=-4.2(8)%, which can explain discrepancies in the BHF values of YFe as determined by various experiments.

    DOI: 10.1103/PhysRevB.70.132405

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  • Large hyperfine anomaly between Y-91 and Y-91m in Fe Reviewed

    K Nishimura, S Ohya, T Ohtsubo, Sato, I, J Goto, T Izumikawa, M Tanigaki, A Taniguchi, Y Ohkubo, Y Kawase, S Muto

    PHYSICAL REVIEW B   70 ( 13 )   2004.10

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    Nuclear magnetic resonance on oriented nuclei was carried out using a sample of dilute Y-91 and Y-91m in iron prepared by ion implantation of radioactive precursor Rb isotopes. For (YFe)-Y-91, the beta-ray asymmetry was utilized to measure the magnetic hyperfine interaction frequency, nu(0)=73.566(22) MHz, which led to the magnetic hyperfine field, B-HF=-29.4(2)T, by using the known nuclear g-factor. The field shift of the resonant frequency, dnu(0)/dB(0)=-2.501(17) MHz/T for (YFe)-Y-91, implies a Knight shift value, K=0.0(8)%. The interaction frequency and the field shift of (YFe)-Y-91m obtained via the gamma-ray detection confirmed the previously reported results. A ratio of the measured nu(0) and dnu(0)/dB(0) values for both (YFe)-Y-91 and (YFe)-Y-91m gave rise to the hyperfine anomaly, (91)Delta(91m)=-4.2(8)%, which can explain discrepancies in the B-HF values of YFe as determined by various experiments.

    DOI: 10.1103/PhysRevB.70.132405

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  • Study of the density distribution of C-17 from reaction cross section measurement

    C Wu, Y Yamaguchi, A Ozawa, R Kanungo, Tanihata, I, T Suzuki, DQ Fang, T Suda, T Ohnishi, M Fukuda, N Iwasa, T Ohtsubo, T Izumikawa, R Koyama, W Shinozaki, M Takahashi

    NUCLEAR PHYSICS A   739 ( 1-2 )   3 - 14   2004.7

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    The reaction cross section of C-17 on a carbon target at 79 A MeV has been measured by the transmission method. The density distribution of C-17 was deduced using the finite-range Glauber model (FRGM) combined with the interaction cross section of C-17 at high energy. The existence of a tail in the density distribution of C-17 is suggested to get a better understanding of both the low energy and high energy data. Under a core plus single-particle assumption, analysis shows a dominant d-wave of the valence neutron in C-17. (C) 2004 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nuclphysa.2004.03.220

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  • Hyperfine field measurement of <sup>89</sup>SrNi by NMR-ON method

    T. Ohtsubo, S. Ohya, M. Ota, K. Nishimura, Y. Masamori, Y. Horino, H. Yarimizu, D. Shinojima, T. Izumikawa, J. Goto, S. Muto, M. Tanigaki, A. Taniguchi, Y. Ohkubo, Y. Kawase

    KURRI Progress Report   23   2004.4

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  • Magnetic moment and spin of the extremely proton-rich nucleus Al-23 Reviewed

    Matsuta K, Nakashima Y, Nagatomo T, Ozawa A, Yamada K, Mihara M, Kumashiro S, Fujiwara H, Momota S, Ota M, Ohtsubo T, Yoshida K, Sumikama T, Ogura M, Minamisono K, Fukuda M, Minamisono T, Nojiri Y, Suzuki T, Izumikawa T, Tanihata I, Alonso JR, Krebs GF, Symons TJM

    HYPERFINE INTERACTIONS   159 ( 1-4 )   257 - 260   2004

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    The g-factor of the exteremely proton-rich nucleus 23Al(T 1/2 = 0.47 s) has been measured for the first time, applying β-NMR technique on this nucleus implanted in Si. The obtained |g| = (1.58 ± 0.2) suggests that the spin of the ground state of 23Al is 5/2. The magnetic moment is determined as \μ\ = (3.95 ± 0.55) μN. © Springer 2005.

    DOI: 10.1007/s10751-005-9115-2

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  • Halo structure of B-17 studied via its reaction cross section Reviewed

    Y Yamaguchi, T Suzuki, T Ohtsubo, T Izumikawa, W Shinozaki, M Takahashi, R Koyama, S Watanabe, C Wu, A Ozawa, T Ohnishi, DQ Fang, T Suda, R Kanungo, H Jeppesen, Tanihata, I, M Fukuda, N Iwasa

    NEW ERA OF NUCLEAR STRUCTURE PHYSICS   114 - 118   2004

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    The reaction cross section for the neutron-rich nucleus B-17 on a carbon target has been measured at an energy of 77 AMeV by a transmission method. A large enhancement of 17B reaction cross section at low energy was observed. The density distribution of 17B was deduced through the energy dependence of the reaction cross section together with high-energy data using a finite-range Glauber-model calculation under an optical-limit approximation. It is confirmed that the neutron-tail in the density distribution is necessary for 17B in order to reproduce the measured reaction cross sections. Based on the assumption of a core (B-15) plus valence two-neutron picture, the mixture of v(2s(1/2)) and V(1d(5/2)) was studied without treating the correlation between two neutrons.

    DOI: 10.1142/9789812702401_0017

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  • Hyperfine Interact Reviewed

    K. Nishimura, S. Ohya, T. Ohtsubo, T. Izumikawa, M. Sasaki, I. Sato, M. Suzuki, J. Goto, M. Tanigaki

    Hyperfine Interact   159   239 - 243   2004

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  • Magnetic hyperfine anomaly measurements using nuclear magnetic resonance on oriented nuclei Reviewed

    Ohtsubo T, Ohya S, Sasaki M, Izumikawa T, Nishimura K, Goto J, Tanigaki M, Taniguchi A, Ohkubo Y, Kawase Y, Muto S

    NEW ERA OF NUCLEAR STRUCTURE PHYSICS   297 - 301   2004

  • Hyperfine fields of Sr and Y in ferromagnetic hosts, and magnetic moment of Y-93 Reviewed

    Nishimura K, Ohya S, Ohtsubo T, Izumikawa T, Sasaki M, Sato I, Suzuji M, Goto J, Tanigaki M, Taniguchi A, Ohkubo Y, Kawase Y, Muto S

    HYPERFINE INTERACTIONS   159 ( 1-4 )   239 - 243   2004

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    Recent studies of hyperfine fields BHF of Sr and Y in Fe are briefly reviewed. The BHF value of Y in Ni is given by NMRON of 91mYNi. The nuclear magnetic moment of the ground state of 93Y is extracted from the β-ray detected NMRON of 93YFe. © Springer 2005.

    DOI: 10.1007/s10751-005-9106-3

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  • Density distribution of B-17 from a reaction cross-section measurement Reviewed

    Y. Yamaguchi, C. Wu, T. Suzuki, A. Ozawa, D. Q. Fang, M. Fukuda, N. Iwasa, T. Izumikawa, H. Jeppesen, R. Kanungo, R. Koyama, T. Ohnishi, T. Ohtsubo, W. Shinozaki, T. Suda, M. Takahashi, I. Tanihata

    Physical Review C   70 ( 5 )   054320   2004

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    The reaction cross section (sigma(R)) for the neutron-rich nucleus B-17 on a carbon target has been measured at an energy of 77A MeV by the transmission method. An enhancement of sigma(R) at intermediate energy compared to that at high energy was observed. The density distribution of B-17 was deduced through the energy dependence of sigma(R) using a finite-range Glauber-type calculation under an optical-limit approximation as well as a few-body approach. The existence of a long neutron tail in B-17 was demonstrated. The fraction of the wave function with)2)2 the valence two-neutron configuration of (2s(1/2))(J=0)(2) or (1d(5/2))(J=0)(2) was found to be 50+/-10% based on a finite-range few-body Glauber-type calculation.

    DOI: 10.1103/PhysRevC.70.054320

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  • Nuclear magnetic resonance on oriented nuclei of (SrFe)-Sr-91 Reviewed

    Nishimura K, Ohya S, Ohtsubo T, Sasaki M, Goto J, Izumikawa T, Tanigaki M, Taniguchi A, Ohkubo Y, Kawase Y, Muto S

    PHYSICAL REVIEW B   68 ( 1 )   2003.7

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    Nuclear magnetic resonance on oriented nuclei was used in combination with beta-ray detection and ion implantation, leading to the successful observation of the resonance of 91SrFe. The magnetic hyperfine field (BHF) was deduced as BHF(SrFe)=-23.83(7) T using the known nuclear g factor. This result explains the existing problem of disagreement in BHF values for SrFe between theory and experiment. An experimental nuclear spin-lattice relaxation rate was obtained and is briefly discussed in comparison with a theoretical estimate. © 2003 The American Physical Society.

    DOI: 10.1103/PhysRevB.68.012403

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  • Nuclear spin relaxation of extremely dilute impurities using brute-force NMRON Reviewed

    K Nishimura, S Ohya, Y Kawamura, T Ohtsubo, T Izumikawa, S Muto, K Mori

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   71 ( 6 )   1589 - 1593   2002.6

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    Brute-force nuclear magnetic resonance on oriented nuclei (BF-NMRON) was used to investigate the nuclear spin-relaxation times, T-1, of Nb-90 in Nb and Cu, Tc-96 in Nb, Rh-101m in Cu, and I Ag-101m in Ag with an external field of 11.922 T at about 10 mK. The observed relaxation times with known nuclear g-factors were used to estimate the converted relaxation rates, (T(1)Tg(n)(2))(-1), which were compared with those n obtained from NMR and other methods. From the comparison, it was found that (T-1 Tg(n)(2))(-1) of Nb-90 in Nb n and Ag-110m in Ag coincided with those of the bulk systems. (T-1 Tg(n)(2))(-1) of Nb-90 in CU Was about four times n larger than that of Nb bulk system. Both Tc-96 in Nb and Rh-101m in Cu produced (T(1)Tg(n)(2))(-1) values n consistent with previous studies.

    DOI: 10.1143/JPSJ.71.1589

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  • Momentum Distribution of [Formula presented] Fragments from the Breakup of [Formula presented] Reviewed

    T. Suzuki, Y. Ogawa, M. Chiba, M. Fukuda, N. Iwasa, T. Izumikawa, R. Kanungo, Y. Kawamura, A. Ozawa, T. Suda, I. Tanihata, S. Watanabe, T. Yamaguchi, Y. Yamaguchi

    Physical Review Letters   89 ( 1 )   2002

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    The two-neutron removal cross section ( [Formula presented]) and the longitudinal momentum distribution of [Formula presented] fragments from the breakup of [Formula presented] on [Formula presented] were measured at [Formula presented]. The distribution in the projectile rest frame is characterized by a FWHM of [Formula presented] for [Formula presented]. The [Formula presented] is found to be [Formula presented]. A Glauber–type analysis of the data provides clear evidence of a two-neutron halo structure in [Formula presented]. © 2002 The American Physical Society.

    DOI: 10.1103/PhysRevLett.89.012501

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  • Momentum Distribution of 15B Fragments from the Breakeup of 17B (共著) Reviewed

    T. Suzuki, Y. Ogawa, M. Chiba, M. Fukuda, N. Iwasa, T. Izumikawa, R. Kanungo, Y. Kawamura, A. Ozawa, T. Suda, I. Tanihata, S. Watanabe, T. Yamaguchi, Y. Yamaguchi

    Physical Review Letters   Vol.89, p.12501   2002

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  • Hyperfine anomalies of Tc-95-Tc-96 and Ag-106(m)-Ag-110(m) using brute-force nuclear magnetic resonance on oriented nuclei Reviewed

    S Ohya, H Sato, T Izumikawa, J Goto, S Muto, K Nishimura

    PHYSICAL REVIEW C   63 ( 4 )   044314   2001.4

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    Brute-force nuclear magnetic resonance on oriented nuclei (BF-NMRON) experiments have been performed with 12 T maximum field and at 10 mK. The resonances for (TcNb)-Tc-95,96, (AgAg)-Ag-106-Ag-m, and 110Ag(m)Ag have been observed. The magnetic moment of Ag-106(m) was determined to be 3.705(4) mu (N). Comparing the resonance frequencies of BF-NMRON and those of the known NMR-ON results in Fe, the hyperfine anomalies in Fe were determined: (95)Delta (96)(Tc) = -0.026(17)%. (106m)Delta 110(m)(Ag) = 0. 10(6)%. The measured hyperfine anomalies are interpreted in terms of a microscopic theory including core polarization and exchange current effects.

    DOI: 10.1103/PhysRevC.63.044314

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  • Behavior of boron implanted in semiconductor Si Reviewed

    T Izumikawa, K Matsuta, M Tanigaki, T Miyake, K Sato, M Fukuda, SY Zhu, T Minamisono

    HYPERFINE INTERACTIONS   136   599 - 605   2001

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    Using beta-NMR with B-12 nuclei the temperature dependence of the lattice locations of boron implanted in Si is studied. At low temperature almost 100% of the implanted B is in either substitutional site or nonsubstitutional site. Above 260 K, the nonsubstitutional B rapidly becomes undetectable and disappears at a temperature higher than 325 K due to the fast spin-lattice relaxation. Above 450 K, the fraction of substitutional B increases to 100%. These experimental results are consistently explained by the thermal atomic jump and the dissociation of the defect associated with the nonsubstitutional B.

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  • Knight shift of Nb-90, Mo-93m, Tc-96, and Rh-101m in Nb using brute-force NMRON Reviewed

    K Nishimura, S Ohya, Y Kawamura, T Ohtsubo, T Izumikawa, S Muto

    HYPERFINE INTERACTIONS   136   567 - 572   2001

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    Brute-force nuclear magnetic resonance on oriented nuclei (BF-NMRON) of Nb-90, Mo-93m, Tc-96, and Rh-101m was carried out in a new host metal, Nb. The resonance center frequencies at an external field of 11.922(6) T were obtained as v((NbNb)-Nb-90) = 56.572(9) MHz, v((MoNb)-Mo-93m) = 85.76(3) MHz, v((TcNb)-Tc-96) = 66.997(11) MHz, and v(Rh-101m Nb) = 111.010(19) MHz. A systematic analysis of the Knight shift of 4d elements in extremely dilute alloy systems is briefly discussed.

    DOI: 10.1023/A:1020535110992

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  • Quadrupole moment of the proton rich beta-emitting nucleus N-12 Reviewed

    T Minamisono, T Ohtsubo, K Sato, S Takeda, S Fukuda, T Izumikawa, M Tanigaki, T Miyake, T Yamaguchi, N Nakamura, H Tanji, K Matsuta, M Fukuda, Y Nojiri

    PHYSICS LETTERS B   420 ( 1-2 )   31 - 36   1998.2

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    The quadrupole moment of the beta-emitter N-12(I-pi = 1(+),T-1/2 = 11 ms) has been measured to be Q(N-12) = + 9.8 +/- 0.9 mb by use of a modified beta-NMR method. The present result is 3 times smaller than the value which was deduced from the photoproduction cross-section of pions on C-12, while it is twice the shell-model prediction based on the Cohen-Kurath wave functions in the Woods-Saxon potential. (C) 1998 Elsevier Science B.V.

    DOI: 10.1016/S0370-2693(97)01553-0

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  • Electric Quadrupole Interactions of the Shout-Lived Beta-Emitter <sup>12</sup>N in Insulator Crystals (共著) Reviewed

    Zeitschrift fur Naturforschung   ( 53a )   293   1997

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  • Hyperfine interactions of <sup>13</sup>O and <sup>23</sup>Mg implanted in Pt. (共著) Reviewed

    Hyperfine Interactions.   ( 97-98 )   501   1996

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  • Spin polarization of Mg-23 in Mg-24+Au, Cu and Al collisions at 91 A MeV Reviewed

    MATSUTA K, FUKUDA S, IZUMIKAWA T, TANIGAKI M, FUKUDA M, NAKAZATO M, MIHARA M, ONISHI T, YAMAGUCHI T, MIYAKE T, SASAKI M, HARADA A, OHTSUBO T, NOJIRI Y, MINAMISONO T, YOSHIDA K, OZAWA A, KOBAYASHI T, TANIHATA I, ALONSO JR, KREBS GF, SYMONS TJM

    POLARIZATION PHENOMENA IN NUCLEAR PHYSICS   ( 339 )   623 - 628   1995

  • Lattice locations of <sup>12</sup>B implanted in Si. (共著) Reviewed

    Hyperfine Interactions C   1   187 - 190   1995

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  • PRECISE MEASUREMENT OF THE QUADRUPOLE-MOMENT OF BETA-EMITTING B-12 Reviewed

    T OHTSUBO, Y NAKAYAMA, T IZUMIKAWA, S TAKEDA, N NAKAMURA, H TANJI, T MINAMISONO

    HYPERFINE INTERACTIONS   88 ( 1-3 )   25 - 33   1994

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    Hyperfine interactions of B-12(I(pi) = 1+, T1/2 = 21 ms) implanted in the substitutional site of B atoms (stable) in a (single crystal like) BN (hexagonal) was studied by use of a beta-NMR detection. For efficient and simple measurements, the conventional beta-NMR has been modified as a new nuclear quadrupole resonance technique (NNQR). For the present case with the nuclear spin I = 1 the detection efficiency is improved about 30 times compared with the one with the old method. The quadrupole moment of B-12 was determined precisely as \Q(B-12; 1+)\ = 13.21+/-0.26 mb.

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  • MAGNETIC-MOMENT OF THE SHORT-LIVED BETA-EMITTER MG-23 Reviewed

    M FUKUDA, T IZUMIKAWA, T OHTSUBO, M TANIGAKI, S FUKUDA, Y NAKAYAMA, K MATSUTA, Y NOJIRI, T MINAMISONO

    PHYSICS LETTERS B   307 ( 3-4 )   278 - 282   1993.6

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    The magnetic moment of Mg-23 (I(pi) = 3/2+, T1/2 = 11.3 s) has been determined to be \mu(Mg-23)\ = 0.5364 +/- 0.0003 mu(N) by means of a beta-NMR detection with recoil polarization obtained through a nuclear reaction. The deduced spin expectation values are in agreement with the systematic behavior of the mirror doublets in the sd shell.

    DOI: 10.1016/0370-2693(93)90219-8

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  • MAGNETIC-MOMENT OF MG-23 Reviewed

    M FUKUDA, T IZUMIKAWA, T OHTSUBO, M TANIGAKI, S FUKUDA, Y NAKAYAMA, K MATSUTA, Y NOJIRI, T MINAMISONO

    HYPERFINE INTERACTIONS   78 ( 1-4 )   117 - 121   1993

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    The magnetic moment of the Mg-23 (I(pi) = 3/2+, T1/2 = 11.3 s), has been determined as \mu(Mg-23)\ = 0.5364 +/- 0.0003 mu(N) by use of beta-NMR detection with the recoil polarization obtained through a low energy nuclear reaction.

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  • NEW DETERMINATION OF QUADRUPOLE COUPLING-CONSTANTS OF LI ISOTOPES IN SINGLE-CRYSTALS LIIO3 AND LINBO3 Reviewed

    T MINAMISONO, T OHTSUBO, Y NAKAYAMA, S FUKUDA, T IZUMIKAWA, M TANIGAKI, M MATSUI, S TAKEDA, N NAKAMURA, M FUKUDA, K MATSUTA, Y NOJIRI

    HYPERFINE INTERACTIONS   78 ( 1-4 )   159 - 163   1993

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    Quadrupole effects in NMR spectra of Li-8(I(pi) = 2+; T1/2 = 0.84 s) in LiIO3 and LiNbO3 single crystals have been detected by use of a modified beta-NMR. The coupling constants for both crystals are in agreement with known ones. Field gradients in the crystals were measured by detecting pulsed-Fourier transformed NMR of Li-7. The quadrupole moments deduced from both samples agree, and \Q(Li-8; 2+)\ = 32.7 +/- 0.6 mb has been determined.

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  • Precise measurement of the magnetic moment of doubly closed shell-1 nucleus <sup>15</sup>O(I<sup>π</sup>=1/2<sup>-</sup>, T<sub>1/2</sub>=122S)(共著) Reviewed

    Hyperfine Interactions   ( 78 )   105   1993

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MISC

  • 19aAW-5 Measurement of reaction cross sections for neutron rich B isotopes

    Tanaka M., Fukuda M., Nishimura D., Takechi M., Nishizuka K., Aoki K., Izumikawa T., Oikawa H., Ohtsubo T., Ohnishi K., Kato I., Kanke Y., Kanda N., Kitagawa A., Sato S., Shimamura H., Sugihara T., Suzuki S., Suzuki T., Takagaki R., Takei Y., Takenouchi A., Tadano N., Tanaka Y., Hang D., Nagai T., Fukuda S., Machida M., Mihara M., Miyata E., Muraoka J., Yagi S., Yamaoka S., Yamaguchi T.

    71 ( 1 )   279 - 279   2016.3

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  • 指向性があるガンマ線自動車走行サーベイシステムの開発状況

    後藤淳, 天谷吉宏, 泉川卓司, 遠藤良, 椎谷友博, 菖蒲川由郷, 高橋剛, 吉田秀義, 内藤眞

    日本原子力学会秋の大会予稿集(CD-ROM)   2015   ROMBUNNO.L53   2015.8

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  • 指向性があるガンマ線自動車走行サーベイシステムの開発

    後藤淳, 天谷吉宏, 平山繁, 椎谷友博, 菖蒲川由郷, 泉川卓司, 上松和義, 葛城美徳, 高橋俊博, 吉田秀義, 内藤眞

    日本原子力学会春の年会予稿集(CD-ROM)   2015   ROMBUNNO.L29   2015.3

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  • 南相馬市における放射線線量の測定とGISを用いた視覚化

    菖蒲川由郷, 後藤淳, 泉川卓司, 天谷吉宏, 大家正泰, 高橋俊博, 吉田秀義, 葛城美徳, 平山繁, 鈴木翼, 齋藤玲子, 内藤眞

    新潟大学災害・復興科学研究所年報   3 ( 3 )   132 - 133   2014.12

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  • 28pTF-4 RICH (Ring Imaging Cherenkov counter) development for heavy ion beam identification

    Kanbe R., Fukuda M., Nishimura D., Takechi M., Izumikawa T., Kamisho Y., Morita Y., Ohno J., Tanaka M., Yamaoka S., Watanabe K., Mihara M., Matsuta K., Yoshinaga K., Watanabe D., Zhu Y., Hotaka H., Kinno S., Taguchi Y., Kanke Y., Nagumo J., Yoshinobu S., Suzuki K., Yamaguchi T., Kouno J., Matsunaga S., Ohmika S., Takeuchi Y., Nishimura T., Ohtsubo T., Nagashima M., Tashiro K., Honma A., Murooka D., Kato S., Haga K., Suzuki S., Sato S., Kitagawa A., Fukuda S.

    Meeting abstracts of the Physical Society of Japan   69 ( 1 )   94 - 94   2014.3

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  • 28pTF-6 Development of Cherenkov TOF counter for heavy ion beam identification

    Watanabe K., Kanbe R., Fukuda M., Nishimura D., Takechi M., Izumikawa T., Kamisho Y., Morita Y., Ohno J., Tanaka M., Yamaoka S., Mihara M., Matsuta K., Yoshinaga K., Watanabe D., Zhu Y., Hotaka H., Kinno S., Taguchi Y., Kanke Y., Nagumo J., Yoshinobu S., Suzuki K., Yamaguchi T., Kouno J., Matsunaga S., Ohmika S., Takeuchi Y., Nishimura T., Ohtsubo T., Nagashima M., Tashiro K., Honma A., Murooka D., Kato S., Haga K., Suzuki S., Sato S., Kitagawa A., Fukuda S.

    Meeting abstracts of the Physical Society of Japan   69 ( 1 )   95 - 95   2014.3

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  • 28aTA-3 CT R of Unstable Nuclei on Proton Targets and Separation of Proton and Neutron Density Distributions

    Tanaka M., Fukuda M., Nishimura D., Suzuki S., Takechi M., Mihara M., Matsuta K., Morita Y., Kamisyo Y., Oono J., Kanbe R., Yamaoka S., Watanabe K., Ohtsubo T., Izumikawa T., Nagashima M., Honma A., Murooka D., Suzuki K., Yamaguchi T., Kouno J., Yamaki S., Matsunaga T., Kinno S., Taguchi Y., Kitagawa A., Fukuda M., Sato S.

    Meeting abstracts of the Physical Society of Japan   69 ( 1 )   81 - 81   2014.3

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  • 28aTA-2 Possibility of a study of momentum distribution of nucleons inside a nucleus by using proton pick-up reactions

    Fukuda M., Ohno J., Yamaoka S., Tanaka M., Nishimura D., Takechi M., Izumikawa T., Kamisho Y., Morita Y., Kanbe R., Mihara M., Matsuta K., Liu B., Yoshinaga K., Suzuki T., Yamaguchi T., Khono J., Suzuki S., Ohtsubo T., Nagashima M., Tashiro K., Honma A., Kitagawa A., Sato S., Fukuda S.

    Meeting abstracts of the Physical Society of Japan   69 ( 1 )   80 - 80   2014.3

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  • 南相馬市における放射線線量の測定とGISを用いた視覚化

    斎藤玲子, 菖蒲川由郷, 鈴木翼, 内藤眞, 泉川卓司, 後藤淳, 天谷吉宏, 大家正泰, 高橋俊博, 吉田秀義, 葛城美徳, 平山繁

    新潟大学災害・復興科学研究所年報   2 ( 2 )   155 - 156   2013.9

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  • Detector development for heavy ion beam identification using Cherencov light

    Kanbe R., Fukuda M., Nishimura D., Takechi M., Izumikawa T., Wakabayashi M., Iwamoto K., Kamisho Y., Morita Y., Ohno J., Tanaka M., Mihara M., Matsuta K., Yoshinaga K., Watanabe D., Zhu Y., Hotaka H., Suzuki K., Kouno J., Furuki H., Sato K., Yamaguchi T., Suzuki S., Nagashima M., Sakai T., Sera D., Tashiro K., Honma A., Liu B., Ohtsubo T., Zhang G., Sun B., Sato S., Kitagawa A., Fukuda S.

    Meeting abstracts of the Physical Society of Japan   68 ( 2 )   91 - 91   2013.8

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  • Measurement of Reactions Cross Section for Proton-rich Mg Isotopes

    Homma A., Fukuda M., Mihara M., Suzuki T., Yamaguchi T., Nishimura D., Ohtsubo T., Izumikawa T., Suzuki S., Nagashima M., Abe K., kikukawa N., Sakai T., Sera D., Nakamura Y., Iwamoto K., Wakabayashi M., Yaguchi M., Ohno J., Kamisho Y., Morita Y., Ichihashi N., Sato K., Furuki H., Miyazawa S., Inaba N., Kouno J., Suzuki S., Nishizuka I., Yasumoto S., Yamaki S., Sato S., Kitagawa A.

    Meeting abstracts of the Physical Society of Japan   68 ( 2 )   63 - 63   2013.8

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  • Reaction cross sections and nuclear structure of ^<12>N

    Morita Y., Fukuda M., Nishimura D., Takechi M., Iwamoto K., Wakabayashi M., Kamisho Y., Ohno J., Tanaka M., Kanbe R., Mihara M., Matsuta K., Yoshinaga K., Zhu Y., Kouno J., Yamaki S., Suzuki K., Yamaguchi T., Suzuki S., Nagashima M., Abe K., Tashiro K., Honma A., Ohtsubo T., Izumikawa T., Sato S., Kitagawa A., Fukuda S.

    Meeting abstracts of the Physical Society of Japan   68 ( 2 )   63 - 63   2013.8

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  • Momentum distribution of ^<17>F by nucleon pick up reaction

    Ohno J., Fukuda M., Nishimura D., Takechi M., Izumikawa T., Wakabayashi M., Iwamoto K., Kamisho Y., Morita Y., Tanaka M., Kanbe R., Mihara M., Matsuta K., Liu B., Yoshiaga K., Watanabe D., Zhu Y., Suzuki K., Kouno J., Yamaguchi T., Suzuki S., Nagashima M., Sakai T., Tashiro K., Honma A., Ohtsubo T., Sato S., Kitagawa A., Fukuda S.

    Meeting abstracts of the Physical Society of Japan   68 ( 2 )   60 - 60   2013.8

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  • Reaction cross section and neutron halo structure in neutron rich nucleus ^<14>B

    Tanaka M., Fukuda M., Iwamoto K., Nishimura D., Suzuki S., Takechi M., Mihara M., Matsuta K., Wakabayashi M., Yaguchi M., Oono J., Morita Y., Ohtsubo T., Izumikawa T., Nagashima M., Ogura S., Abe K., Kikukawa N., Sakai T., sera D., Suzuki K., Yamaguchi T., Sato K., Furuki H., Miyazawa S., Ichihashi N., Kouno J., Yamaki S., Kitagawa A., Fukuda M., Sato S.

    Meeting abstracts of the Physical Society of Japan   68 ( 2 )   62 - 62   2013.8

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  • 27pHE-3 Precise measurement of lifetime for the gamma-decay of the isomeric state in ^<26m>Na

    Tanaka M., Fukuda M., Nishimura D., Sakai T., Takechi M., Izumikawa T., Iwamoto K., Wakabayashi M., Kamisho Y., Morita Y., Oono J., Kambe S., Mihara M., Matsuta K., Yoshinaga K., Watanabe D., Zhu Y., Hotaka T., Kouno J., Furuki H., Sato K., Suzuki K., Yamagichi T., Suzuki S., Nagashima M., Sera D., Tashiro K., Honma A., Ohtsubo T., Z. Gaolong, S. Baohua, Sato S., Kitagawa A.

    Meeting abstracts of the Physical Society of Japan   68 ( 1 )   100 - 100   2013.3

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  • 26aHA-14 Production of polarized ^<8,9>Li beam by means of projectile fragmentation

    Kamisho Y., Mihara M., Fukuda M., Matsuta K., Morita Y., Ohtsubo T., Izumikawa T., Suzuki S., Nagashima M., Nakamura Y., Nishimura D., Momota S., Abe Y., Ishibashi Y., Shirai H., Yoshida N., Kubo K., Sugiyama J., Kitagawa A., Torigoe M., Sato S., Minamisono T.

    Meeting abstracts of the Physical Society of Japan   68 ( 1 )   72 - 72   2013.3

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  • 26aHE-6 反応断面積による中性子過剰核^<14>Bの中性子ハローと核構造(26aHE 実験核物理領域,理論核物理領域合同 不安定核(I)(合同),実験核物理領域)

    福田 光順, 西村 太樹, 鈴木 伸司, 武智 麻耶, 三原 基嗣, 松多 健策, 若林 優, 岩元 昂大, 矢口 雅貴, 大野 淳一, 森田 祐介, 大坪 隆, 泉川 卓司, 長島 正幸, 小倉 聡之, 阿部 康介, 菊川 直樹, 酒井 拓, 世良 大志郎, 鈴木 健, 山口 貴之, 佐藤 加奈恵, 古木 悠敬, 宮澤 周, 市橋 直卓, 河野 準平, 山木 さやか, 北川 敦志, 佐藤 眞二, 福田 茂一, Kanazawa M.

    日本物理学会講演概要集   68 ( 1 )   76 - 76   2013.3

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  • 28pHB-10 Detector development for heavy ion beam identification using Cherencov light

    Morita Y., Fukuda M., Nishimura D., Takechi M., Izumikawa T., Wakabayashi M., Iwamoto K., Kamisho Y., Ohno J., Tanaka M., Kanbe R., Mihara M., Matsuta K., Yoshinaga K., Watanabe D., Zhu Y., Hotaka H., Suzuki K., Kouno J., Furuki H., Sato K., Yamaguchi T., Suzuki S., Nagashima M., Sakai T., Sera D., Tashiro K., Honma A., Ohtsubo T., Zhang G., Sun B., Sato S., Kitagawa A., Fukuda S.

    Meeting abstracts of the Physical Society of Japan   68 ( 1 )   104 - 104   2013.3

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  • β-NMR Measurement of ^<58>Cu

    Kamisho Y., Minamisono T., Ogura M., Ozawa A., Nagae D., Ishibashi Y., Abe Y., Inaba N., Okada S., Saito Y., Ueno H., Mihara M., Yamada K., Ohtsubo T., Izumikawa T., Momota S., Nishimura D., Imamura K., Xiaofei Y., Suzuki T., Yamaguchi T., Shirai K., Matsuta K., Fujimura T., Matsukawa K., Fukuda M., Morita Y., Ohno J., Tanaka M., Shinozaki S., Kambe R.

    Meeting Abstracts of the Physical Society of Japan   68 ( 0 )   87 - 87   2013

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    DOI: 10.11316/jpsgaiyo.68.2.1.0_87_4

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  • 南相馬市,浪江町,楢葉町における放射線線量の測定とGISを用いた視覚化

    齋藤玲子, 菖蒲川由郷, 鈴木翼, 内藤眞, 泉川卓司, 後藤淳, 天谷吉宏, 大家正泰, 高橋俊博, 吉田秀義, 葛城美徳, 平山繁

    新潟大学災害・復興科学研究所年報   1 ( 1 )   131 - 132   2012.10

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  • 南相馬市,浪江町,楢葉町における放射線線量の測定とGISを用いた視覚化

    ( 1 )   145 - 146   2012.10

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  • 11aSC-9 Relationship between Production Mechanism of ^<16>N and Isomeric Ratio

    Nishimura D., Fukuda M., Mihara M., Iwamoto K., Yaguchi M., Ohno J., Kamisho Y., Morita Y., Takechi M., Lantz M., Ichihashi N., Sato K., Furiki H., Miyazawa S., Ichikawa C., Kuboki T., Sugiyama M., Suzuki T., Namihira K., Hachiuma I., Yamaguchi T., Abe K., Kikukawa N., Nakamura Y., Ohkuma Y., Ohtsubo T., Ogura T., Sakai T., Suzuki S., Nagashima M., Izumikawa T., Fan G. W., Xu W., Momota S., Kanazawa M., Sato S., Fukuda S., Kitagawa A.

    Meeting abstracts of the Physical Society of Japan   67 ( 2 )   59 - 59   2012.8

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  • 12aSC-2 First observation of the isomeric state of proton drip line nucleus ^<26>P

    Sakai T., Nishimura D., Fukuda M., Suzuki S., Nagashima M., Ohtsubo T., Abe K., Kikukawa N., Sera D., Nakamura Y., Mihara M., Iwamoto K., Wakabayashi M., Yaguchi M., Ono J., Kamisho Y., Morita Y., Suzuki T., Yamaguchi T., Ichihashi N., Sato K., Furuki H., Miyazawa S., Inaba N., Kouno J., Suzuki S., Nishizuka I., Yasumoto S., Yamaki S., Izumikawa T., Sato S., Kitagawa A.

    Meeting abstracts of the Physical Society of Japan   67 ( 2 )   67 - 67   2012.8

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  • 12aSC-1 Reaction cross sections and nuclear structure of ^<26>P

    Wakabayashi M., Fukuda M., Nishimura D., Mihara M., Iwamoto K., Ohno J., Morita Y., kanbe S., S. shinichi, Tanaka M., Takechi M., Ohtsubo T., Suzuki S., Nagashima M., Ogura M., Sakai T., Abe K., Kikukawa N., Izumikawa T., Suzuki K., Yamaguchi T., Ichihashi N., Sato K., Furuki H., Miyazawa S., shu Y., Hotaka H., Yoshinaga K., watanabe D., Kitagawa A., Kanazawa M., Sato S., Fukuda S.

    Meeting abstracts of the Physical Society of Japan   67 ( 2 )   67 - 67   2012.8

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  • 11aSC-5 中性子過剰核^<14>Bの反応断面積(11aSC 実験核物理領域,理論核物理領域合同,不安定核(合同),実験核物理領域)

    福田 光順, 西村 太樹, 鈴木 伸司, 武智 麻耶, 三原 墓嗣, 松多 健策, 若林 優, 岩元 昂大, 矢口 雅貴, 大野 淳一, 森田 祐介, 大坪 隆, 泉川 卓司, 長島 正幸, 小倉 聡之, 阿部 康介, 菊川 直樹, 酒井 拓, 世良 大志郎, 鈴木 健, 山口 貴之, 佐藤 加奈恵, 古木 悠敬, 宮澤 周, 市橋 直卓, 河野 準平, 山木 さやか, 北川 敦志, 佐藤 眞二, 福田 茂一, 金澤 光隆

    日本物理学会講演概要集   67 ( 2 )   58 - 58   2012.8

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  • 24aXC-12 ^<26>Alを用いた反応断面積に対する核整列効果(24aXC 実験核物理領域,理論核物理領域合同 不安定核(合同),実験核物理領域)

    福田 光順, 西村 太樹, 鈴木 伸司, 武智 麻耶, 三原 基嗣, 松多 健策, 若林 優, 岩元 昂大, 矢口 雅貴, 大野 淳一, 森田 祐介, 大坪 隆, 泉川 卓司, 長島 正幸, 小倉 聡之, 阿部 康介, 菊川 直樹, 酒井 拓, 世良 大志郎, 鈴木 健, 山口 貴之, 古木 悠敬, 宮澤 周, 市橋 直卓, 北川 敦志, 佐藤 眞二, 福田 茂一, 金澤 光隆

    日本物理学会講演概要集   67 ( 1 )   81 - 81   2012.3

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  • 24aXC-5 Production Method of High Polarized ^<12>N Beam in Heavy Ion Reactions

    Yaguchi M., Matsuta K., Fukuda M., Mihara M., Iwamoto K., Wakabayashi M., Ohno J., Kamisho Y., Morita Y., Ohtsubo T., Izumikawa T., Nagashima M., Sakai T., Abe K., Ozawa A., Abe Y., Niwa T., Nishimura D., Nagatomo T., Kitagawa A., Sato S., Kanazawa M., Torigoe M., Minamisono T., Momota S.

    Meeting abstracts of the Physical Society of Japan   67 ( 1 )   79 - 79   2012.3

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  • 24aXC-11 Reaction cross sections of near proton drip line nucleus, ^<26,27,28>P

    Wakabayashi M., Fukuda M., Nishimura D., Mihara M., Iwamoto K., Ohno J., Morita Y., Takechi M., Ohtsubo T., Suzuki S., Nagashima M., Ogura M., Sakai T., Abe K., Kikukawa N., Izumikawa T., Suzuki K., Yamaguchi T., Ichihashi N., Furuki H., Miyazawa S., Kitagawa A., Kanazawa M., Sato S., Fukuda S.

    Meeting abstracts of the Physical Society of Japan   67 ( 1 )   80 - 80   2012.3

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  • 11aSC-10 Effect of Nuclear Deformation on Reaction Cross Sections for Na Isotopes

    Suzuki S., Ozawa A., Ooishi H., Moriguchi T., Sumikama T., Geissel H., Aoi N., Chen Rui-Jiu, Fang De-Qing, Fukuda N., Fukuoka S., Takechi M., Furuki H., Inabe N., Ishibashi Y., Ito T., Izumikawa T., Kameda D., Kubo T., Lantz M., Lee C. S., Ma Yu-Gang, Nishimura D., Mihara M., Momota S., Nagae D., Nishikiori R., Niwa T., Ohnishi T., Okumura K., Ogura T., Sakurai H., Sato K., Fukuda M., Shimbara Y., Suzuki H., Takeda H., Takeuchi S., Tanaka K., Uenishi H., Winkler M., Yanagisawa Y., Ohtsubo T., Kuboki T., Nagashima M., Suzuki T., Yamaguchi T.

    Meeting Abstracts of the Physical Society of Japan   67 ( 0 )   60 - 60   2012

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    DOI: 10.11316/jpsgaiyo.67.2.1.0_60_1

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  • 24aXC-9 Measurements of interaction cross-section for ^<23-25,27-35>Na isotopes

    Suzuki S., Ozawa A., Ooishi H., Moriguchi T., Sumikama T., Geissel H., Aoi N., Chen Rui-Jiu, Fang De-Qing, Fukuda N., Fukuoka S., Takechi M., Furuki H., Inabe N., Ishibashi Y., Ito T., Izumikawa T., Kameda D., Kubo T., Lantz M., Lee C. S., Ma Yu-Gang, Nishimura D., Mihara M., Momota S., Nagae D., Nishikiori R., Niwa T., Ohnishi T., Okumura K., Ogura T., Sakurai H., Sato K., Fukuda M., Shimbara Y., Suzuki H., Takeda H., Takeuchi S., Tanaka K., Uenishi H., Winkler M., Yanagisawa Y., Ohtsubo T., Kuboki T., Nagashima M., Suzuki T., Yamaguchi T.

    Meeting Abstracts of the Physical Society of Japan   67 ( 0 )   80 - 80   2012

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    DOI: 10.11316/jpsgaiyo.67.1.1.0_80_2

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  • 22aGQ-2 Development of a nuclear probe to observe the behavior of Cu impurities in Si

    Mihara M., Izumikawa T., Ueno H., Matsuta K., Nishimura D., Nagatomo T., Monguchi T., Ito Y., Nagae D., Fukuda M., Yoshimi A., Yamada K., Takechi M., Ichikawa Y., Momota S., Hirayama Y., Ohtsubo T., Suzuki S., Kubo T., Namiki Y., Ozawa A., Ishibashi Y., Oishi H., Suzuki K., Hachiuma I., Namihira K., Horikawa D., Minamisono T., Yamaguchi T., Kuboki T., Suzuki T., Satoh K., Kobayashi Y., Asahi K., Matsukawa K., Shirai K.

    Meeting abstracts of the Physical Society of Japan   66 ( 2 )   979 - 979   2011.8

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  • 18aSL-11 陽子ドリップライン領域sd殼核の生成と反応断面積(18aSL 理論核物理領域,実験核物理領域合同,不安定核(I),理論核物理領域)

    福田 光順, 西村 太樹, 三原 基嗣, 上西 秀和, 岩元 昂大, 矢口 雅貴, 松多 健策, 武智 麻耶, 鈴木 伸司, 長島 正幸, 小倉 聡之, 大坪 隆, 泉川 卓司, 久保木 隆正, 市川 知沙, 鈴木 健, 山口 貴之, 金澤 光隆, 福田 茂一, 佐藤 眞二, 北川 敦志

    日本物理学会講演概要集   66 ( 2 )   51 - 51   2011.8

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  • 18pSK-8 Energy Dependence of Proton-Nucleus Reaction Cross Sections (II)

    Nishimura D., Fukuda M., Takechi M., Mihara M., Komurasaki J., Matsumiya R., Matsuta K., Hachiuma I., Kuboki T., Miura M., Nakajima S., Namihira K., Saito K., Suzuki T., Yamaguchi T., Yoshitake M., Nagashima M., Ohkuma Y., Obtsubo T., Shimbara Y., Watanabe R., Izumikawa T., Mattias Lantz, Tanaka K., Suda T., Moriguchi T., Ozawa A., Ishikawa D., Yasuda Y., Momota S., Wei Fan Guan, Wang Xu, Fukuda S., Kanazawa M., Kitagawa A., Sato S.

    Meeting abstracts of the Physical Society of Japan   66 ( 2 )   90 - 90   2011.8

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  • 25aGJ-3 Study of Reaction Cross-section for Deformed Nucleus ^<10>B with Aligned Beam

    Suzuki S., Ohtsubo T., Fukuda M., Takechi M., Mihara M., Nishimura D., Shimbara Y., Izumikawa T., Nagashima M., Ogura T., Suzuki T., Yamaguchi T., Kuboki T., Ichikawa S., Uenishi H., Iwamoto K., Yaguchi M., Kitagawa A., Sato S., Kanazawa M.

    Meeting abstracts of the Physical Society of Japan   66 ( 1 )   42 - 42   2011.3

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  • 26pGJ-2 sd殻陽子過剰核のピックアップ反応による生成と反応断面積(26pGJ 実験核物理領域,理論核物理領域合同 不安定核II(合同),実験核物理領域)

    福田 光順, 西村 太樹, 三原 基嗣, 上西 秀和, 岩元 昂大, 矢口 雅貴, 松多 健策, 武智 麻耶, 鈴木 伸司, 長島 正幸, 小倉 聡之, 大坪 隆, 泉川 卓司, 久保木 隆正, 市川 知沙, 鈴木 健, 山口 貴之, 金澤 光隆, 福田 茂一, 佐藤 眞二, 北川 敦志

    日本物理学会講演概要集   66 ( 1 )   88 - 88   2011.3

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  • 27pGJ-5 Energy Dependence of Proton-Nucleus Reaction Cross Sections (II)

    Nishimura D., Fukuda M., Takechi M., Mihara M., Komurasaki J., Matsumiya R., Matsuta K., Hachiuma I., Kuboki T., Miura M., Nakajima S., Namihira K., Saito K., Suzuki T., Yamaguchi T., Yoshitake M., Nagashima M., Ohkuma Y., Ohtsubo T., Shimbara Y., Watanabe R., Izumikawa T., Mattias Lantz, Tanaka K., Suda T., Moriguchi T., Ozawa A., Ishikawa D., Yasuda Y., Momota S., Fan Guan Wei, Xu Wang, Fukuda S., Kanazawa M., Kitagawa A., Sato S.

    Meeting abstracts of the Physical Society of Japan   66 ( 1 )   93 - 93   2011.3

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  • 27pGJ-6 Momentum Distributions of Na Isotopes Produced through Charge-Exchange Reactions

    Uenishi H., Nishimura D., Fukuda M., Mihara M., Suzuki S., Iwamoto K., Yaguchi M., Yamamura H., Ogura T., Momota S., Matsuta K., Ohtsubo T., Izumikawa T., Minamisono T., Nagatomo T., Kitagawa A., Kanazawa M., Torikoshi M., Sato S., Jose R., Alonso G., James T., Symons M.

    Meeting abstracts of the Physical Society of Japan   66 ( 1 )   94 - 94   2011.3

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  • 27pGJ-11 Measurement of ^<58>Cu magnetic moment by means of the beta-NMR technique

    Mihara M., Izumikawa T., Ueno H., Matsuta K., Nishimura D., Nagatomo T., Moriguchi T., Ito Y., Nagae D., Fukuda M., Yoshimi A., Yamada K., Takechi M., Ichikawa Y., Momota S., Hirayama Y., Ohtsubo T., Suzuki S., Kubo T., Namiki Y., Ozawa A., Ishibashi Y., Oishi H., Suzuki K., Hachiuma I., Namihira K., Horikawa D., Minamisono T., Yamaguchi T., Kuboki T., Suzuki T., Satoh K., Kobayashi Y., Asahi K., Matsukawa K., Shirai K.

    Meeting abstracts of the Physical Society of Japan   66 ( 1 )   95 - 95   2011.3

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  • 13pSB-6 反応断面積による^<17>Neの核子密度分布II(13pSB 理論核物理領域,実験核物理領域合同 不安定核III(合同),理論核物理領域)

    福田 光順, 田中 鐘信, 三原 基嗣, 武智 麻耶, 西村 太樹, 珍田 武志, 炭竃 聡之, 工藤 修一, 松多 健策, 南園 忠則, 鈴木 健, 大坪 隆, 泉川 卓司, 百田 佐多生, 山口 貴之, 大西 崇, 小沢 顕, 谷畑 勇夫, Zheng T.

    日本物理学会講演概要集   65 ( 2 )   46 - 46   2010.8

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  • 13pSB-5 Isomeric Ratio and Momentum Distribution of Projectile Fragment ^<16>N

    Nishtmura D., Fukuda M., Mihara M., Takechi M., Lantz M., Ichikawa C., Kuboki T., Sugiyama M., Suzuki T., Namihira K., Hachiuma I., Yamaguchi T., Ohkuma Y., Ohtsubo T., Suzuki S., Nagashima M., Izumikawa T., Fan G. W., Xu W., Kanazawa M., Sato S., Fukuda S, Kitagawa A.

    Meeting abstracts of the Physical Society of Japan   65 ( 2 )   45 - 45   2010.8

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  • 22pBD-2 Energy Dependence of Proton-Nucleus Reaction Cross Sections

    Nishimura D., Fukuda M., Takechi M., Mihara M., Komurasaki J., Matsumiya R., Matsuta K., Hachiuma I., Kuboki T., Miura M., Nakajima S., Namihira K., Saito K., Suzuki T., Yamaguchi T., Yoshitake M., Nagashima M., Ohkuma Y., Ohtsubo T., Shimbara Y., Watanabe R., Izumikawa T., Lantz Mattias, Tanaka K., Suda T., Moriguchi T., Ozawa A., Ishikawa D., Yasuda Y., Momota S., Fan Guan Wei, Xu Wang, Fukuda S., Kanazawa M., Kitagawa A., Sato S.

    Meeting abstracts of the Physical Society of Japan   65 ( 1 )   88 - 88   2010.3

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  • 22pBD-3 Directional Correlation of Nuclear Collision Probability by Aligned Beam of Deformed Nucleus

    Fukuda M., Nishimura D., Takechi M., Mihara M., Matsumiya R., Matsuta K., Kuboki M., Namihira K., Hachiuma I., Yamaguchi T., Suzuki T., Ohkuma Y., Nagashima M., Suzuki S., Ohtsubo T., Shimbara Y., Izumikawa T., Momota S., Minamisono T., Xu W., Fan G. W., Lantz M., Tanaka K., Suda T., Fukuda S., Sato S., Kanazawa M., Kitagawa A.

    Meeting abstracts of the Physical Society of Japan   65 ( 1 )   88 - 88   2010.3

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  • 23aBD-6 Measurement of Reaction Cross Sections for Neutron Rich ^<29-35>Na Isotopes

    Kuboki T., Takechi M., Ohtsubo T., Fukuda M., Suzuki T., Namihira K., Hachiuma I., Yamaguchi T., Aoi N., Inabe N., Kameda D., Suda T., Tanaka K., Lantz M., Ohkuma Y., Shimbara Y., Suzuki S., Watanabe R., Nishimura D., Mihara M., Izumikawa T., Ishibashi Y., Itoh Y., Ohishi H., Ogawa K., Ozawa A., Moriguchi T., Yasuda Y., Sumikama T., Yoshinaga K., Geissel H., Winkler M., Momota S., Ohnishi T., Ohtake M., Kusaka K., Takeda H., Fukuda N., Yanagisawa Y., Yoshida A., Yoshida K., Kubo T.

    Meeting abstracts of the Physical Society of Japan   65 ( 1 )   61 - 61   2010.3

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  • Electromagnetic Moments of Proton-Rich P-28 and Decomposition of Its Spin Reviewed

    K. Matsuta, Shengyun Zhu, M. Mihara, Dongmei Zhou, D. Nishimura, Yongnan Zheng, M. Fukuda, Daqing Yuan, R. Matsumiya, Yi Zuo, J. Komurasaki, Ping Fan, Xizhen Zhang, D. Ishikawa, T. Suzuki, T. Nagatomo, T. Izumikawa, T. Ohtsubo, S. Takahashi, H. Hirano, Y. Shimbara, T. Kubo, R. Yamada, Y. Namiki, M. Nagashima, S. Momota, K. Ooi, Y. Nojiri, D. Kameda, A. Kitagawa, M. Kanazaw, M. Torikoshi, S. Sato, T. Minamisono, T. Sumikamall, M. Ogura, H. Akai, J. R. Alonso, T. J. M. Symons, G. F. Krebs

    NUCLEAR PHYSICS TRENDS   1235   260 - +   2010

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    The magnetic moment of P-28 (I-pi = 3(+), T-1/2 = 270.3 ms) has been measured precisely by means of beta-NMR technique. The obtained magnetic moment is vertical bar mu(P-28)vertical bar = 0.3115 (34) mu(N). Combined with the magnetic moment of its mirror partner Al-28, the nuclear spin I = 3 is decomposed into its 4 components. The measurement of the Q moment has also been tried. From the preliminary NQR spectrum, it was found that the quadrupole coupling constant eqQ/h may be slightly larger than the prediction, which may show enhancement of the Q moment.

    DOI: 10.1063/1.3442605

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  • 24pZF-8 Precise measurement of the magnetic moment of ^<28>P

    Ohtsubo T., Hirano H., Takahashi S., Kubo T., Yamada R., Shimbara Y., Matsuta K., Mihara M., Nishimura D., Komurasaki J., Fukuda M., Zhou D.M., Zheng Y.N., Yuan D.Q., Zhu S.Y., Izumikawa T., Momota S., Kameda D., Kitagawa A., Sato S., Kanazawa M., Torikoshi M., Nojiri Y., Minamisono T., Matsumiya R., Ishikawa D., Nagatomo T., Alonso J.R., Krebs G.F., Symons T.J.M.

    Meeting abstracts of the Physical Society of Japan   63 ( 1 )   79 - 79   2008.2

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  • 24aZF-9 Reaction Cross Sections and Nucleon Density Distribution of Mass Number A=9 System

    Nishimura D., Fukuda M., Takechi M., Isikawa D., Komurasaki J., Mihara M., Matsuta K., Matsumiya R., Kuboki T., Yoshitake M., Suzuki T., Yamaguchi T., Nakajima S., Saito K., Miura M., Ohtsubo T., Shimbara Y., Hirano H., Watanabe R., Izumikawa T., Tanaka K., Suda T., Ozawa A., Yasuda Y., Moriguchi T., Hashidume Y., Hoya T., Momota S., Fukuda S., Sato S., Kitagawa A., Kanazawa M.

    Meeting abstracts of the Physical Society of Japan   63 ( 1 )   73 - 73   2008.2

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  • 24aZF-8 Measurement of reaction cross sections for A=3 mirror nuclei

    Yoshitake M., Yamaguchi T., Suzuki T., Aiba T., Ishikawa D., Izumikawa T., Ohotubo T., Ozawa A., Kanazawa M., Kitagawa A., Kuboki T., Kobayashi K., Komurasaki J., Saito K., Satoh S., Shinbara Y., Takechi M., Tanaka K., Nishimura D., Hashizume Y., Hirano H., Fukuda M., Hoya T., Miura M., Mihara M., Momota S., Moriguchi T., Yasuda Y., Yamada R., Watanabe R.

    Meeting abstracts of the Physical Society of Japan   63 ( 1 )   73 - 73   2008.2

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  • 24aZF-11 Measurements of Momentum Distributions of Projectile Fragments using △E-E Counter Telescope

    Takechi M., Fukuda M., Mihara M., Nishimura D., Komurasaki J., Ishikawa D., Matsumiya R., Matsuta K., Minamisono T., Izumikawa I, Ohtsubo T., Shimbara Y., Aiba T., Hirano H., Watanabe R., Yamada R., Momota S., Yamaguchi I, Nakajima S., Kobayashi K., Kuboki T., Yoshitake M., Saito K., Miura M., Suzuki T., Ozawa A., Yasuda Y., Hashidume Y., Hoya T., Moriguchi T., Tanaka K., Suda T., Kitagawa A., Sato S., Kanazawa M.

    Meeting abstracts of the Physical Society of Japan   63 ( 1 )   74 - 74   2008.2

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  • 24aZF-12 Momentum distribution of ^<18>C fragment from ^<20>C breakup

    Hashizume Y., Tanaka K., Ozawa A., Yamaguchi T., Suzuki T., Aiba T., Aoi N., Izumikawa T., Inafuku K., Iwasa N., Ohtsubo T., Kurokawa M., Kobayashi K., Komuro M., Kondo Y., Shinoda R., Shinohara M., Suzuki H., Takeuchi S., Takeshita E., Takechi M., Togano Y., Nakajima S., Nakabayashi T., Baba H., Fukuda M., Mastuyama T., Michimasa S., Yasuno T., Yamada K., Yoshitake M., Kubo T., Nakamura T., Sakurai H., Motobayashi T.

    Meeting abstracts of the Physical Society of Japan   63 ( 1 )   74 - 74   2008.2

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  • 24pZF-9 Measurement of electromagnetic monents of ^<22>F

    Mihara M., Matsuta K., Komurasaki J., Hirano H., Nishimura D., Momota S., Ohtsubo T., Izumikawa T., Shimbara Y., Kubo T., Kameda D., Zhou D.M., Zheng Y.N., Zhu S.Y., Kitagawa A., Kanazawa M., Torikoshi M., Sato S., Nagatomo T., Matsumiya R., Ishikawa D., Fukuda M., Minamisono T., Nojiri Y., Alonso J.R., Krebs G.F., Symons T.J.M.

    Meeting abstracts of the Physical Society of Japan   63 ( 1 )   80 - 80   2008.2

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  • 21aYF-11 Evaluation possibility of polyethylene as hydrogen target for measurement of cross sections for ^<12>C and ^8 at 50A〜100AMeV region

    Ishikawa D., Fukuda M., Takechi M., Nishimura D., Komurasaki J., Mihara M., Matsuta K., Matsumiya R., Kuboki T., Yoshitake M., Yamaguchi T., Nakashima S., Suzuki T., Hirano H., Izumikawa T., Ohtsubo T., Tanaka K., Suda T., Sato S., Kitagawa A., Kanazawa M., Okamura H.

    Meeting abstracts of the Physical Society of Japan   62 ( 2 )   65 - 65   2007.8

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  • 22pZD-6 Measurement of the Magnetic Moment of ^<24m>Al

    Komurasaki J., Nishimura D., Matsuta K., Mihara M., Matsumiya R., Momota S., Ohtsubo T., Izumikawa T., Hirano H., Kitagawa A., Kanazawa M., Torikoshi M., Sato S., Fukuda M., Ishikawa D., Minamisono T., Watanabe R., Kubo T., Nojiri Y., Alonso J.R., Krebs G.F., Symons T.J.M.

    Meeting abstracts of the Physical Society of Japan   62 ( 2 )   85 - 85   2007.8

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  • 22pZD-7 Nuclear Spin Polarization of ^<23>Ne,^<24m,25>Al and ^<28>P Produced through Single Nucleon Pickup and Charge Exchange Reactions in Medium Energy Heavy Ion Collisions

    Matsuta K., Mihara M., Nagatomo T., Ohtsubo T., Izumikawa T., Momota S., Nishimura D., Komurasaki J., Takahashi S., Hirano H., Ishikawa D., Zhou D.M., Zheng Y.N., Zhu S.Y., Kitagawa A., Kanazawa M., Torikoshi M., Sato S., Minamisono T., Fukuda M., Nojiri Y., Matsumiya R., Sumikama T., Tanaka K., Yamada K., Ozawa A., Suzuki T., Yamaguchi T., Nakajima S., Yoshida K., Nakashima Y., Fujiwara H., Kumashiro S., Ota M., Shinojima D., Tanaka H., Yasuno T., Muranaka K., Maemura T., Chiba A., Pahlovy S.A., Alonso J.R., Krebs G.F., Symoons T.J.

    Meeting abstracts of the Physical Society of Japan   62 ( 2 )   85 - 85   2007.8

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  • 22aZD-11 Target Dependence of Reaction Cross Sections for ^3H and ^3He at Intermadiate Energies

    Nishimura D., Fukuda M., Takechi M., Mihara M., Isikawa D., Komurasaki J., Matsuta K., Matsumiya R., Kuboki T., Yoshitake M., Nakajima S., Saito K., Miura M., Tanifuji K., Shibata H., Suzuki T., Yamaguchi T., Hirano H., Ohtsubo T., Izumikawa T., Momota S., Hoya T., Ozawa A., Tanaka K., Suda T., Sato S., Kitagawa A., Kanazawa M.

    Meeting abstracts of the Physical Society of Japan   62 ( 2 )   46 - 46   2007.8

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  • 22pTD-4 Spin-lattice relaxation time of short lived nuclei ^<25>Al and ^<28>P in Pt

    Mihara M., Matsuta K., Nishimura D., Nagatomo T., Matsumiya R., Ogura M., Akai H., Momota S., Ohtsubo T., Izumikawa T., Zhou D.M., Zheng Y.N., Zhu S.Y., Hirano H., Komurasaki J., Takahashi S., Kitagawa A., Kanazawa M., Torikoshi M., Sato S., Fukuda M., Ishikawa D., Minamisono T., Watanabe R., Kubo T., Nojiri Y., Sumikama T., Alonso J.R., Krebs G.F., Symons T.J.M.

    Meeting abstracts of the Physical Society of Japan   62 ( 2 )   992 - 992   2007.8

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  • 27aSC-6 Measurement of reaction cross sections for A=3 mirror nuclei

    Yoshitake M., Yamaguchi T., Suzuki T., Aiba T., Ishikawa D., Izumikawa T., Ohotubo T., Ozawa A., Kanazawa M., Kitagawa A., Kuboki T., Kobayashi K., Komurasaki J., Satoh S., Takechi M., Tanaka K., Nishimura D., Hashizume Y., Hirano H., Fukuda M., Hoya T., Mihara M., Momota S., Moriguchi T., Yasuda Y.

    Meeting abstracts of the Physical Society of Japan   62 ( 1 )   72 - 72   2007.2

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  • 28aSE-9 Measurement of the Electric Quadrupole Moment of ^<25>Al

    Matsuta K., Nagatomo T., Mihara M., Matsumiya R., Momota S., Ohtsubo T., Izumikawa T., Hirano H., Takahashi S., Kitagawa A., Kanazawa M., Torikoshi M., Sato S., Fukuda M., Minamisono T., Nojiri Y., Alonso J. R., Krebs G. F., Symons T. J. M.

    Meeting abstracts of the Physical Society of Japan   62 ( 1 )   88 - 88   2007.2

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  • 28aSE-12 Measurement of the Magnetic Moment of ^<28>P

    Komurasaki J., Mihara M., Nagatomo T., Nisimura D., Matsuta K., Fukuda M., Zhou D. M., Isikawa D., Zheng Y. N., Izumikawa T., Momota S., Takahasi S., Hirano H., Ohtsubo T., Zhu S. Y., Kitagawa A., Kanazawa M., Sato S., Torikoshi M., Minamisono T., Nojiri Y., Alonso J. R., Krebs G. F., Symons T. J. M.

    Meeting abstracts of the Physical Society of Japan   62 ( 1 )   88 - 88   2007.2

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  • 27aSC-2 Study of the Nucleon Density Distribution of ^6Li through the Measurement of Reaction Cross Sections at Intermediate Energies

    Takechi M., Fukuda M., Mihara M., Nishimura D., Komurasaki J., Matsumiya R., Matsuta K., Minamisono T., Izumikawa T., Ohtsubo T., Hirano H., Momota S., Yamaguchi T., Nakashima S., Kobayashi K., Suzuki T., Tanaka K., Suda T., Ozawa A., Yasuda Y., Hashizume Y., Hoya T., Moriguchi T., Kitagawa A., Sato S., Kanazawa M.

    Meeting abstracts of the Physical Society of Japan   62 ( 1 )   71 - 71   2007.2

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  • 27aSC-4 Reaction Cross Sections and Nucleon Density Distribution of the Proton Dripline Nucleus ^9C

    Nisimura D., Fukuda M., Matsuta K., Mihara M., Matsumiya R., Komurasaki, Isikawa D., Takechi M., Nakashima S., Kuboki T., Yoshitake M., Suzuki T., Yamaguchi T., Ohtsubo T., Hirano H., Izumikawa T., Tanaka K., Suda T., Sato S., Kitagawa A., Kanazawa M.

    Meeting abstracts of the Physical Society of Japan   62 ( 1 )   72 - 72   2007.2

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  • 24aZD-3 Local electronic state of nitrogen impurity in TiO_2 at low temperatures

    Mihara M., Matsumiya R., Matsuta K., Shimomura K., Komurasaki J., Nishimura D., Nagasawa T., Ishikawa D., Fukuda M., Izumikawa T., Minamisono T.

    Meeting abstracts of the Physical Society of Japan   61 ( 2 )   790 - 790   2006.8

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  • 20aSC-2 Reaction cross section of ^<23>Al and momentum distributions of its fragments

    Ma Y.G., Fang D.Q., Cai X.Z., Shen W.Q., Sun Z.Y., Ren Z.Z., Guo W., Bei Y.B., Wang K., Yan T.Z., Ma C.W., Chen J.G., Chen J.H., Ma G.L., SU Q.M., Tian W.D., Zhong C., Zuo J.X., Hosoi M., Izumikawa T., Kanungo R., Nakajima S., Ohnishi T., Ohtsubo T., Ozawa A., Suda T., Sugawara K., Suzuki T., Takizawa A., Tanaka K., Yamaguchi T., Tanihata I.

    Meeting abstracts of the Physical Society of Japan   61 ( 2 )   1 - 1   2006.8

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  • 20aSC-4 Measurement of reaction cross sections for neutron rich nuclei ^<19,20,22>C

    Tanaka K., Yamaguchi T., Suzuki T., Ozawa A., Aiba T., Aoi N., Izumikawa T., Inafuku K., Iwasa N., Ohotubo T., Kurokawa M., Kobayashi K., Komuro M., Kondo Y., Shinoda R., Shinohara M., Suzuki H., Takeuchi S., Takeshita E., Takechi M., Togano Y., Nakajima S., Nakabayashi T., Baba H., Hashizume Y., Fukuda M., Mastuyama T., Michimasa S., Yasuno T., Yamada K., Yoshitake T., Kubo T., Nakamura T., Sakurai H., Motobayashi T.

    Meeting abstracts of the Physical Society of Japan   61 ( 2 )   1 - 1   2006.8

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  • 28pXD-5 Observation of electric field gradients using short-lived nucleus ^<12>N implanted in ZnO

    Mihara M., Matsumiya R., Matsuta K., Fukuda M., Izumikawa T., Minamisono T.

    Meeting abstracts of the Physical Society of Japan   61 ( 1 )   938 - 938   2006.3

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  • 27aWD-7 Reaction cross section of ^<18>C and momentum distributions of fragments from ^<17>C, ^<18>C

    Ozawa A., Yamaguchi Y., Wu C., Suzuki T., Fang D.Q., Fukuda M., Iwasa N., Izumikawa T., Jeppense H., Kanungo R., Koyama R., Ohnishi T., Ohtsubo T., Shinozaki W., Suda T., Takahashi M., Tanihata I.

    Meeting abstracts of the Physical Society of Japan   61 ( 1 )   28 - 28   2006.3

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  • 21pYM-8 Magnetic field dependence of the spin-lattice relaxation of boron implanted in silicon

    Izumikawa T., Matsuta K., Sato K., Mihara M., Fukuda M., Minamisono T., Zhu S. Y.

    Meeting abstracts of the Physical Society of Japan   60 ( 2 )   826 - 826   2005.8

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  • Magnetic moment of extremely proton-rich nucleus 23Al Reviewed

    T. Nagatomo, K. Matsuta, A. Ozawa, Y. Nakashima, R. Matsumiya, M. Mihara, T. Yasuno, A. Chiba, K. Yamada, S. Momota, T. Ohtsubo, M. Ohta, D. Shinojima, T. Izumikawa, H. Tanaka, T. Yamaguchi, S. Nakajima, H. Maemura, K. Muranaka, S. Kumashiro, H. Fujiwara, K. Yoshida, T. Sumikama, K. Tanaka, M. Ogura, K. Minamisono, M. Fukuda, T. Minamisono, Y. Nojiri, T. Suzuki, I. Tanihata, J. R. Alonso, G. F. Krebs, T. J, M. Symons

    JOURNAL OF PHYSICS-Conference Series   20 ( 1 )   173 - 174   2005

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    The g-factor of the extremely proton-rich nucleus 23Al (T 1/2 = 0.47 s) has been measured by means of the β-NMR method for the first time. The g-factor were determined as |g| = 1.557(88) from the obtained NMR spectra. From the comparison between the experimental value and the shell model calculation, the spin parity of the ground state of 23Al was determined as Iπ = 5/2+. Thus, the magnetic moment of 23Al was determined as |μ| = 3.89(22)μN. © 2005 IOP Publishing Ltd.

    DOI: 10.1088/1742-6596/20/1/032

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  • Electric quadrupole momentof Na-25 Reviewed

    K Matsuta, H Fujiwara, T Nagatomo, M Mihara, S Kumashiro, Y Nakashima, M Ogura, S Momota, T Ohtsubo, M Ohta, A Kitagawa, M Kanazawa, M Torikoshi, S Sato, M Fukuda, T Minamisono, Y Nojiri, K Minamisono, M Suda, T Izumikawa, Alonso, JR, GF Krebs, TJM Symons

    International Symposium on Correlation Dynamics in Nuclei   20   169 - 170   2005

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    The electric quadrupole coupling constant eqQ/h of Na-25 (I-pi = 5/2(+), T-1/2 = 59.6 s), implanted in a TiO2 single crystal, has been measured by use of the beta-NMR technique, to determine the electric quadrupole moment Q. As a result, vertical bar eqQ/h vertical bar = (44 +/- 16) kHz and vertical bar Q(Na-25)vertical bar = (1.0 +/- 0.4) mb were determined. From the NMR on 25Na in NaCl, the magnetic moment was determined as vertical bar mu vertical bar = (3.6832 +/- 0.0003) mu(N).

    DOI: 10.1088/1742-6596/20/1/030

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  • 27pWD-2 Nuclear Matter Distribution of ^6He from Measurements of Reaction Cross Sections at Intermediate Energies

    Takechi M., Ohtsubo T., Takizawa A., Matsuyama T., Momota S., Yamaguchi T., Hosoi M., Nakashima S., Suzuki T., Kitagawa A., Sato S., Fukuda M., Kanazawa M., Sasaki M., Tanaka K., Suda T., Mihara M., Matsumasa T., Matsumiya R., Nishimoto M., Matsuta K., Minamisono T., Izumikawa T.

    Meeting Abstracts of the Physical Society of Japan   60 ( 0 )   53 - 53   2005

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    DOI: 10.11316/jpsgaiyo.60.1.1.0_53_3

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  • 30aZB-4 Hyperfine anomaly study of ^<91,91m>Y

    Ohtsubo T, Ohya S, Sasaki M, Sato I, Izumikawa T, Nishimura K, Goto J, Tanigaki M, Taniguchi A, Ohkubo Y, Kawase Y, Muto S

    Meeting abstracts of the Physical Society of Japan   59 ( 1 )   73 - 73   2004.3

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  • 28aZL-5 Magnetic Moment of ^<23>Al

    Nagatomo T, Nakashima Y, Masuta K, Ozawa A, Yamada K, Mihara M, Kumashiro S, Fujiwara H, Momota S, Nojiri Y, Ota M, Ohtsubo T, Yoshida K, Sumikama T, Ogura M, Minamisono K, Fukuda M, Minamisono T, Suzuki K, Izumikawa T, Tanihata I

    Meeting abstracts of the Physical Society of Japan   59 ( 1 )   36 - 36   2004.3

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  • \nHyperfine Anomaly Study by NMR-ON Method

    T. Ohtsubo, S. Ohya, M. Sasaki, K. Nishimura, I. Sato, M. Suzuki, T. Izumikawa, J. Goto, M. Tanigaki, A. Taniguchi, Y. Ohkubo, Y. Kawase, S. Muto

    KURRI Prog. Rep. 2003   23   0 - 0   2004

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  • Measurement of reaction cross section for ^<17>B

    Yamaguchi Y., Iwasa N., Jeppesen H., Ohtsubo T., Izumikawa T., Watanabe S., Shinozaki W., Koyama R., Takahashi M., Tanihata I., Wu Cuie, Ozawa A., Suzuki T., Ohnishi T., Suda T., Fukuda M., Fang D. Q., Kanungo R.

    Meeting Abstracts of the Physical Society of Japan   58 ( 0 )   24 - 24   2003

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    DOI: 10.11316/jpsgaiyo.58.2.1.0_24_4

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  • Halo structure of Proton Drip-Line Nucleus ^<17>Ne

    Tanaka K, Otsubo T, Suzuki T, Momota S, Izumikawa T, Yamaguti T, Onishi T, Ozawa A, Tanihata I, Zheng Tao, Fukuda M, Mihra M, Takechi M, Chinda T, Sumikama T, Kudo S, Matsuta K, Minamisono T

    Meeting Abstracts of the Physical Society of Japan   58 ( 0 )   25 - 25   2003

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    DOI: 10.11316/jpsgaiyo.58.2.1.0_25_1

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  • Reaction Cross Sections for ^<12>C

    Takechi Maya, Kitagawa Atsushi, Sasaki Makoto, Izumikawa Takuji, Ohtsubo Takashi, Koyama Ryou, Shinozaki Wakako, Takahashi Masa, Momota Sadao, Fukuda Mitsunori, Mihara Mototsugu, Tanaka Kanenobu, Tsuchihashi Masanori, Chinda Takeshi, Matsuta Kensaku, Minamisono Tadanori

    Meeting Abstracts of the Physical Society of Japan   58 ( 0 )   46 - 46   2003

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    DOI: 10.11316/jpsgaiyo.58.1.1.0_46_1

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  • Reaction Cross Sections for ^<12>C at Intermediate Energies

    Takechi M., Suzuki T., Izumikawa T., Ohtsubo T., Koyama R., Shinozaki W., Takahashi M., Kitagawa A., Sasaki M., Suda T., Momota S., Fukuda M., Mihara M., Tanaka K., Chinda T., Tsuchihashi M., Nakashima Y., Matsuta K., Minamisono T.

    Meeting Abstracts of the Physical Society of Japan   58 ( 0 )   77 - 77   2003

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    DOI: 10.11316/jpsgaiyo.58.2.1.0_77_4

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  • 24aWK-11 入射破砕反応^<17>B→^<15>Bの運動量分布

    鈴木 健, 須田 利美, 谷畑 勇夫, 渡辺 茂夫, 山口 貴之, 山口 由高, 小川 洋子, 千葉 将充, 福田 光順, 岩佐 直仁, 泉川 卓司, R Kanungoc, 川村 淑恵, 小沢 顕

    日本物理学会講演概要集   57 ( 0 )   35 - 35   2002

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    DOI: 10.11316/jpsgaiyo.57.1.1.0_35_2

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  • 24pWK-9 ^<21>B探索実験

    小沢 顕, 泉川 卓司, 加藤 智美, 百田 佐多, 木村 喜久男, 山口 貴之, T Zheng, R Kanugo, 須田 利美, 吉田 光一, 谷畑 勇夫, 山口 由高, 鈴木 健

    日本物理学会講演概要集   57 ( 0 )   39 - 39   2002

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    DOI: 10.11316/jpsgaiyo.57.1.1.0_39_3

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  • 24aWK-8 中間エネルギーにおける^<12>Cの反応断面積とその増大

    福田 光順, 須田 利美, 佐々木 誠, 北川 敦志, 三原 基嗣, 土橋 正典, 田中 鐘信, 武智 麻耶, 松多 健策, 南園 忠則, 鈴木 健, 泉川 卓司

    日本物理学会講演概要集   57 ( 0 )   34 - 34   2002

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    DOI: 10.11316/jpsgaiyo.57.1.1.0_34_3

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  • Study of Nuclear moments using Nuclear Orientation with Ion Implantation.

    大矢進, 大坪隆, 後藤淳, 佐藤洋恵, 泉川卓司, 武藤豪, 長明彦, 小泉光生, 関根俊明

    放射線高度利用研究第三期研究成果報告書 大学・原研プロジェクト共同研究 平成13年   54 - 56   2001

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  • 29a-YT-6 Asymmetry Parameter of ^<23>Mg β-decay

    Matsuta K., Onishi T., Fukuda M., Mihara M., Yamaguchi T., Miyake T., Sasaki M., Nojiri Y., Minamisono T., Izumikawa T., Tanigaki M., Nakazato M., Harada A., Ohtsubo T., Fukuda S., Momota S., Yoshida K., Ozawa A., Suzuki T., Kobayashi T., Tanihata I., Alonso J.R., Krebs G.F., Symons T.J.M

    Meeting abstracts of the Physical Society of Japan   52 ( 1 )   66 - 66   1997.3

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  • Hyperfine Interaction of ^<17>O : TiO_2

    Tanigaki M., Sato K., Takeda S., Maruyama Y., Miyake T., Izumikawa T., Yamaguchi T., Matsuta K., Nojiri Y., Minamisono T.

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting   1996 ( 3 )   277 - 277   1996.9

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  • Hyperfine Interaction of 7Li and .BETA.-emitter 8Li in LiIO3 and LiNbO3 Crystals.

    丸山由紀子, 泉川卓司, 谷垣実, 三宅徹, 佐藤和則, 大坪隆, 武田定, 福田光順, 松多健策

    日本物理学会講演概要集(年会)   51st ( 1 )   1996

  • Hyperfine Interactions of <sup>7</sup>Li and <sup>8</sup>Li in LiIO<sub>3</sub> and LiNbO<sub>3</sub> Crystals.

    丸山由紀子, 泉川卓司, 谷垣実, 三宅徹, 佐藤和則, 大坪隆, 武田定, 福田光順, 南園忠則

    京都大学原子炉実験所Technical Report KURRI-TR   ( 418 )   1996

  • 29a-SF-5 Quadrupole moment of the doubly-closed-shell-plus-one-nucleon nucleous ^<41>Sc

    Sato K., Izumikawa T., Tanigaki M., Miyake T., Maruyama Y., Fukuda S., Matsuta K., Fukuda M., Nojiri Y., Minamisono T., Takeda S.

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting   1995 ( 1 )   120 - 120   1995.9

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  • Hyperfine interactions of Short-Lived Beta-Emitter ^<12>B in Ferromagnetic Co

    Nojiri Y., Yanagisawa T., Momota S., Tanaka M., Onishi T., Matsumoto Y., Ohtsubo T., Izumikawa T., Tanigaki M., Fukuda M., Matsuta K., Minamisono T.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting   50 ( 3 )   204 - 204   1995.3

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  • Hyperfine Interaction of ^8Li and ^12N in blue light emitting semiconductor, ZnSe

    Miyake T, Tanigaki M, Izumikawa T, Yamaguchi T, Sato K, Minamisono K, Ohtsubo T, Fukuda S, Fukuda M, Matsuta K, Nojiri Y, Minamisono T

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting   50 ( 2 )   175 - 175   1995.3

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  • Temperature dependence of lattice locations of boron implanted into silicon.

    泉川卓司, 大坪隆, 谷垣実, 三宅徹, 山口貴之, 佐藤和則, 南園啓, 福田光順, 南園忠則

    日本物理学会講演概要集(年会)   50th ( 2 )   1995

  • Hyperfine Interaction of Short-Lived .BETA. Emitters, 12B and 12N, in Mg(hcp) crystal.

    山口貴之, 泉川卓司, 谷垣実, 三宅徹, 佐藤和則, 南園啓, 大坪隆, 福田光順, 南園忠則

    日本物理学会講演概要集(年会)   50th ( 2 )   1995

  • 30a-H-3 Asymmetry Parameter of ^<23>Mg Beta Decay

    Matsuta K, Minamisono T, Fukuda M, Nojiri Y, Fukuda M, Izumikawa T, Tanigaki M, Nakazato M, Mihara M, Onishi T, Yamaguchi T, Miyake T, Sasaki M, Harada A, Otsubo T, Yoshida K, Ozawa A, Kobayashi T, Tanihata I, Alonso J.R., Krebs G.F., Symons T.J.M.

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting   1994 ( 1 )   105 - 105   1994.9

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  • Electric Quadrupole Interaction of the Impurity in Metals by Use of the Modified β-NMR(NNQR) Method.

    大坪隆, 福田茂一, 泉川卓司, 谷垣実, 福田光順, 松多健策, 野尻洋一, 赤井久純, 南園忠則

    京都大学原子炉実験所Technical Report KURRI-TR   ( 386 )   1994

  • Lattice Location of <sup>12</sup>B Implanted in Silicon.

    泉川卓司, 大坪隆, 谷垣実, 三宅徹, 山口貴之, 福田光順, 野尻洋一, 南園忠則

    京都大学原子炉実験所Technical Report KURRI-TR   ( 386 )   1994

  • Hyperfine Interactions of <sup>8</sup>Li in ZnSe.

    谷垣実, 大坪隆, 泉川卓司, 福田茂一, 佐藤和則, 野尻洋一, 南園忠則

    京都大学原子炉実験所Technical Report KURRI-TR   ( 386 )   1994

  • Hyperfine Interactions of Short-Lived Beta Emitter <sup>12</sup>B Implanted in Ferromagnetic Co.

    柳沢隆行, 百田佐多生, 田中学, 大西崇, 松本康寛, 大坪隆, 泉川卓司, 谷垣実, 南園忠則

    京都大学原子炉実験所Technical Report KURRI-TR   ( 386 )   1994

  • Electric quadrupole moment of the proton rich nucleus <sup>12</sup>N.

    大坪隆, 福田茂一, 泉川卓司, 谷垣実, 三宅徹, 山口貴之, 福田光順, 松多健策, 丹治宏彰

    日本物理学会講演概要集(分科会)   1993 ( Autumn Pt 1 )   1993

  • 4a-PS-7 Measurement of the Magnetic Moment of ^<23>Mg

    Fukuda M, Izumikawa T, Ohtsubo T, Fukuda S, Nakayama Y, Tanigaki M, Matsuta K, Nojiri Y, Minamisono T

    1992 ( 1 )   120 - 120   1992.9

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  • 27p-R-1 Measurement of the Electric Quadrupole Moment of ^8Li

    Nakayama Y, Ohtsubo T, Fukuda S, Izumikawa T, Tanigaki M, Kitagawa A, Fukuda M, Nojiri Y, Minamisono T, Takeda S

    47 ( 1 )   43 - 43   1992.3

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  • 30p-ZE-12 Hyperfine Interaction of the ^8Li, ^<12>B in hcp Metal Crystal

    Nakayama Y, Ohtubo T, Fukuda S, Izumikawa T, Tanigaki M, Kitagawa A, Fukuda M, Nojiri Y, Minamisono T

    47 ( 3 )   172 - 172   1992.3

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  • 30a-BPS-14 Hyperfine interaction of ^<12>B in BN and electric quadrupole moment of ^<12>B

    Ohtsubo T., Fukuda S., Nakayama Y., Izumikawa T., Tanisaki M., Someda Y., Fukuda M., Nojiri Y., Minanisono T., Nakamura N., Takeda S., Tanji H.

    46 ( 1 )   57 - 57   1991.9

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Research Projects

  • Study of the neutrino-flux via bound state beta-decay of bare 205Tl ions

    Grant number:18H03696  2018.4 - 2021.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)  Grant-in-Aid for Scientific Research (A)

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    Grant amount:\32500000 ( Direct Cost: \25000000 、 Indirect Cost:\7500000 )

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  • Radioactive cesium deposition mapping and development of a high position resolution mapping system

    Grant number:16K00543  2016.4 - 2019.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    Goto Jun, SHOBUGAWA Yugo, TAKAHASHI Toshihiro, AMAYA Yoshihiro, YOSHIDA Hidenori, TAKAHASHI Takeshi, IZUMIKAWA Takuji

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    Grant amount:\4940000 ( Direct Cost: \3800000 、 Indirect Cost:\1140000 )

    In this study, we performed car-borne survey using ASURA which is a directional car-borne survey system. Distribution of radioactive cesium deposition were measured on Route 6, Joban Expressway, etc.
    We also developed a on-foot survey system to measure radioactive cesium deposition in places which are difficult to measure by car-borne survey such as forests.

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  • Development of very fast particle tomography system and improvement of effieicncy on particle beam therapy

    Grant number:15H03656  2015.4 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    KAWASAKI Takeo, SARAYA Yuichi, KONNO Tomoyuki, KATAURA Ryusuke, IWATA Shuichi

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    Grant amount:\15210000 ( Direct Cost: \11700000 、 Indirect Cost:\3510000 )

    Computed Tomography with high energy particle beam is useful to achieve higher accuracy at particle cancer therapy. In this study, we have developed very fast precise telescope and calorimeter system so that the data taking for tomography finished within a few minutes. We have succeeded to measure the profile of the high intensity proton beam, whose energy is 160MeV and rate is 100kHz, with double sided silicon strip detector and calorimeter tolerant to high rate.

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  • CT imaging with a small proton imaging device

    Grant number:26460723  2014.4 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    Izumikawa Takuji

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    Grant amount:\4030000 ( Direct Cost: \3100000 、 Indirect Cost:\930000 )

    The purpose of this study is to develop a small detection apparatus for proton computed tomography using silicon strip detectors and a calorimeter. We have improved the electronic circuits and FPGA program for the readout of SSD signals in order to enhance the speed of the system. The YAP (YAlO3(Ce) perovskite) , which is one of the fast inorganic scintillators, was also tested. It was confirmed that the energy resolution of YAP has enough performance at low-beam intensities and the SSD worked up to a beam intensity of 400 kHz. It was found there were more noises or pulse pileups than expected. They were caused by high-intensity beams.

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  • Evaluation of cardiac energy-getting system by use of radiopharmaceuticals.

    Grant number:25460205  2013.4 - 2016.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    TAKAHASHI Toshihiro, HARIMA Meirei, IZUMIKAWA Takuji, GOTO Jun

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    Grant amount:\5070000 ( Direct Cost: \3900000 、 Indirect Cost:\1170000 )

    We invesitigated the change of the heart energy-getting system on the various heart conditions using the treated animals and heart-accumulated radiopharmaceuticals. In this study, we used three kinds of the treated animals described just below ; rats with chronic heart failure (CHF group), CHF group + heart-function improved agents (agent administration group) and mice with diabetes mellitus (DM group) and used the following three studies ; heart uptake study, fatty acid metabolic study, heart imaging study.
    In the study using CHF group, it has been shown that the heart energy-getting system with CHF is shifted from fatty acid use to sugar use. In the study using agent (PV) administration group, it has been shown that the heart-function recovery by PV is caused by the increase of the fatty acid metabolic function. In the study using DM group, it has been shown that with increasing damage by DM, the fatty acid uptake in the heart decreases, and the sugar uptake increases.

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  • Neutron skin of Ni isotopes

    Grant number:24244024  2012.5 - 2016.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)  Grant-in-Aid for Scientific Research (A)

    SUZUKI Takeshi, YAMAGUCHI Takayuki, FUKUDA Mitsunori, IZUMIKAWA Takuji, OHTSUBO Takashi, NISHIMURA Daiki

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    Grant amount:\31850000 ( Direct Cost: \24500000 、 Indirect Cost:\7350000 )

    Neutron skin can be deduced via simultaneous and independent measurement of the reaction cross sections and the charge changing cross sections. Ni isotopes, including doubly magic nucleus 78Ni, cover asymmetric parameter from 0 to 0.28. Thus the determination of the neutron skin in Ni isotopes may understand the nuclear equation of state via the density derivative coefficient, and thus the structure of the neutron star.
    Originally the measurements were planned at GSI, Germany. However the upgrade plan at GSI forced to shift the measurement at RIKEN, Japan. Thus the research & development of an Ion-chamber (IC, for the atomic-number identification) was newly required. As a result, new the IC with Z-resolution of 4-sigma separation is now completed. Now we are ready for the experiment.

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  • Development of fast digital readout silicon tracker and application for particle tomography

    Grant number:24654063  2012.4 - 2015.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research  Grant-in-Aid for Challenging Exploratory Research

    KAWASAKI Takeo, IZUMIKAWA Takuji, GOTO Jun, SARAYA Yuichi

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    Grant amount:\3640000 ( Direct Cost: \2800000 、 Indirect Cost:\840000 )

    The tomography application with high energy charged particle has possibility that cancer therapy become more accurate and more effective. This study aims to develop CT (computed tomography) system with the technology developed for accelerator experiment. It succeeded to show the resolution of 0.3 mm in spatial and 0.2 % in electron density measurement. We have also developed new system which has 1,000 times faster data taking rate in order to shorten the beam exposure time. We succeeded to measure the profile of high rate proton beam ( > 100kHz ).

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  • Development of silicon micro strip detector for proton computed tomography

    Grant number:22611008  2010 - 2012

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    IZUMIKAWA Takuji, KAWASAKI Takeo, GOTO Jun, NAGASAKA Yasushi, ASO Tukasa, KIMURA Akinori

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    Grant amount:\4550000 ( Direct Cost: \3500000 、 Indirect Cost:\1050000 )

    The purpose of this study is to develop a small detection apparatus for proton computed tomography. Silicon micro strip detectors (SSD) were used to obtain the proton track. Two sets of the X- and Y-strip detectors were each placed behind and ahead of the object. The residual proton energy was measured by the NaI(Tl) detector. We have measured the energy resolution of the NaI(Tl) detector and the 2D images of simple-shaped objects. It is found that the measurement of the upstream trajectory and the downstream independently is quite useful for spatial resolution of the object.

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  • シリコン検出器を用いた陽子線断層写真実用化のための基礎的研究

    Grant number:20659188  2008 - 2009

    日本学術振興会  科学研究費助成事業 挑戦的萌芽研究  挑戦的萌芽研究

    泉川 卓司, 川崎 健夫, 後藤 淳, 長坂 康史, 田村 詔生

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    Grant amount:\3200000 ( Direct Cost: \3200000 )

    本研究では高エネルギー物理学分野で開発・発展させられてきたシリコンストリップ検出器を用い、粒子線による画像診断装置の実用化の可能性を探ることを目標としている。
    本年度は、昨年度に作成した検出器とPCを結ぶプロトタイプのインターフェース回路の不備を改良し、プリント基板におこし、多数枚のシリコン検出器に対応できるようにした。また、シリコン検出器のアセンブルも継続して行い、予定通り8枚のシリコン検出器を作成した。
    ベータ線源を用いたオフラインでのテストを行い、ベータ線を測定できることを確認した。また、アンプゲイン等のASICのパラメーターの設定を容易にするために、設定値を読み取るためのADコンバーターを付加した。
    完成した装置を国立がんセンター東病院の陽子線治療施設においてオンラインでのテストを行った。実験の実施においては、本装置のデータ収集の計数率が非常に低いため、ビーム強度を極限まで落として実験に望んだ。しかし残念ながら、陽子線を検出することは叶わなかった。オフラインでは動作する物がオンラインで動作しない原因として、多量に発生するであろうX線や加速器運転にともなう電磁ノイズがインターフェース回路を誤動作させているのではないかと考えている。その後、がんセンター東病院の陽子線施設は改修工事に入ったため、再実験を行う事はできなかった。
    装置の主要部は完成しているので、今後、X線や電磁波、電源ノイズ等の対策を行い、オンラインでの測定を成功させねばならないと考えている。

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  • Study of the EC and bound state β decay and its half-life on the highly charged ions.

    Grant number:19204023  2007 - 2010

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)  Grant-in-Aid for Scientific Research (A)

    SUZUKI Takeshi, YAMAGUCHI Takayuki, OHTUBO Takashi, OHTUBO Takashi

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    Grant amount:\43810000 ( Direct Cost: \33700000 、 Indirect Cost:\10110000 )

    In order to test the M-dependence of T_<Lab> required by the "neutrino hypothesis" we investigated the EC decay of H-like ^<122>I^<52+> ions. They exhibit a well-pronounced modulation with a period of T_<Lab> ~6s superimposed on the exponential decay. This period, being in perfect agreement to the predicted scaling with the mass of the parent ion M, corroborates the "neutrino hypothesis", if verified in the final data evaluation. The data analysis on the EC decay of He-like ^<142>Pm^<60+> is in progress.

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  • Evaluation of cardiac energy-getting system by use of labeled fatty acids and labeled sugars.

    Grant number:19590138  2007 - 2009

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    TAKAHASHI Toshihiro, MA Meirei, NAITO Makoto, IZUMIKAWA Takuji

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    Grant amount:\4550000 ( Direct Cost: \3500000 、 Indirect Cost:\1050000 )

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  • Study of α, β decay effects due to nuclear deformation using low-temperature nuclear orientation

    Grant number:17540241  2005 - 2007

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    OHYA Susumu, OHTSUBO Takashi, IZUNIKAWA Takuji, MUTO Suguru

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    Grant amount:\3700000 ( Direct Cost: \3400000 、 Indirect Cost:\300000 )

    The aim of this research is to study Coulomb potential effect on the angular distribution of α and β- rays using low-temperature nuclear orientation In order to improve the resolution of Si detectors, we reconstructed the tail pans of a ^3He/^4He dilution refrigerator. The Si detectors installed at 0.7 K shield are connected with the pre-amps which set outside by two short lines. However, it did not make the resolution of the Si detectors better owing to a change of a noise wave level. Therefore, we used the previous method to connect with the pre-amp from the top of the ^3He/^4He dilution refrigerator by about 1m lines.
    We investigated the ^<95>ZrNi nuclear orientation with Australian group at Canberra The result of anisotropy of β-ray from ^95ZrNi at 10 mK was small about 2%. We also measured the hyperfine field of ^<59>FeNi using P-ray NMR-ON method at 7 mK The result was -28.33(3) T which is in good agreement with -28. 3(3) T reported previously. Also, the relaxation time was determined as 30(25) s at the external magnet field of 0.1 T We tried to make ^<241>Am α-ray samples. At first, a drop (about 5 kBq) of ^241AmCl_3 on a glass plate was evaporated to dryness. The resolution of the 5.485-MeV α-ray was 33 keV using a Si detector. To diffuse ^<241>Am into Fe, ^<241>AmCl_3 on an iron foil sample was heated at 900 degree for 5 min in an atmosphere of hydrogen. However, there is no change of the spectrum of α-ray before and after the diffusion. It seems to be no diffusion into iron. The resolution of a-ray on iron was 130 keV due to melted iron with HCl. In order to make good samples, we need implantation of ^<241>Am into iron with a mass-separator.

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  • Nuclear radii measurment of Kr isotopes with the fragment separator

    Grant number:16340063  2004 - 2005

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    SUZUKI Takeshi, YOSHINAGA Naotaka, YAMAGUCHI Takayuki, OHTSUBO Takashi, IZUMIKAWA Takashi

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    Grant amount:\12100000 ( Direct Cost: \12100000 )

    We have performed the precision measurements of the interaction cross-sections for neutron deficient even-mass Kr isotopes using the ragment separator FRS at GSI in order to determine the nuclear radii of ^<72,76,80>Kr isotopes. We have so far succeeded several experiments to measure nuclear matter radii of light nuclei A<40. The measurements for Kr isotopes are an effort to extend a series of successful experiments to heavier nuclei A~80. To identify the particles unambiguously we have developed the ultra-fast timing plastic scintillation counters with the timing resolution of 13 ps in σ for ^<80>Kr beam at 1.05 AGeV.
    The result of the interaction cross-sections of Kr isotopes clearly shows that the radii increase as the mass number decreases. This is clearly different from our early observations in the light region. A systematics of the radius changes in the medium mass region around theN=Z line is discussed together with the results of indirect measurements recently performed at GANIL. The proton skin thickness for the neutron-deficient Kr isotopes is for the first time compared with that observed in the light nuclei. In addition, the systematics of the production cross-sections and the charge pickup channels have been obtained.

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  • Evaluation of heart functions using dual radiopharmaceuticals and its application to heart diseases.

    Grant number:16590107  2004 - 2005

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    TAKAHASHI Toshihiro, WATANABE Ken-ichi, NAITOH Makoto, IZUMIKAWA Takuji

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    Grant amount:\3000000 ( Direct Cost: \3000000 )

    In this study, we propose the evaluational method of two kinds of heart functions using dual heart accumulating radiopharmaceuticals. The used radiopharmaceuticals were [I-125]9MPA for myocardial fatty acid metabolism, [I-125]MIBG for study of heart sympathetic nervous function and [C-14]2DG for sugar metabolism and the used animals were normal rat (standard heart) and CHF (chronic heart failure) rat, which is a rat model of dilated cardiomyopathy induced by autoimmune myocarditis. Using above-mentioned materials, we performed some animal studies about time (after injection)-heart uptake study, fatty acid metabolic study, autoradiography, etc. In result, in the CHF heart, both the fatty acid metabolic function and the heart sympathetic nervous function were damaged, but the sugar metabolic function was activated. These results have been suggested that the energy efficiency in the CHF heart changes from fatty acid use to sugar use. Further, it has been also shown that the heart size becomes larger with increasing the severity of heart damage (the relatively good correlation between heart weight (heart size) and 9MPA/MIBG heart uptake) and in the CHF heart, the storage metabolic route is mainly damaged by the fatty acid metabolic study.

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  • Beta-NMR study on impurity diffusion in semiconductors.

    Grant number:16540283  2004 - 2005

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    IZUMIKAWA Takuji, MINAMISONO Tadanori, OHYA Susumu, MATSUTA Kensaku, OHTSUBO Takashi, GOTO Jun

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    Grant amount:\2300000 ( Direct Cost: \2300000 )

    The beta-NMR measurements of the boron impurity in germanium were performed. The obtained results are as follows. Three resonances were found : a sharp resonance and a broad one around the Larmor frequency, a resonance at vqSplit=190 kHz. In the same manner as silicon, these three resonances were expected to correspond to the substitutional site (Bs), the site which shows polycrystal pattern (Bx), and the <111> axial symmetrical site (Bns), respectively. While the fraction of Bns is almost constant of 30 % below the temperature of 250 K, above 300 K the resonance disappears. This disappearance is also similar with the case of silicon, i.e., the spin-lattice relaxation should be caused by the fluctuation of the internal field due to the atomic jumps. The temperature dependence of the Bs+Bx was slightly different to the silicon case. Around the room temperature it decreases and makes a depression. One explanation for it may be that the chance for the interaction of Bs or Bx with the vacancy created by the implantation increases with the temperature, and it follows destruction of the polarization.
    In order to confirm the model of the atomic jump, the temperature dependence of the fractions of each site were measured under the different external magnetic fields. As a result, the temperature at which the NMR signal disappears agreed with the expected value by our model. This supports the validity of the atomic jump model.
    The nitrogen impurity in the compound semiconductor TiO2 and ZnO was also investigated. The electric field gradient at the nitrogen impurity in ZnO was measured. The nitrogen impurity in TiO2 locates at oxygen substitutional site and interstitial lattice site. While the substitutional nitrogen seems to be immobile, the defect around the substitutional nitrogen and the interstitial nitrogen seems to be mobile thermally.

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  • Development of β-oxidation measurement for evaluating energy metabolism in the heart and its application to heart diseases.

    Grant number:14572153  2002 - 2003

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    TAKAHASHI Toshihiro, IZUMIKAWA Takuji, NAITOH Makoto, WATANABE Ken-ichi

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    Grant amount:\3500000 ( Direct Cost: \3500000 )

    In this study, we propose the new analytical method of metabolites in the heart using labeled fatty acid derivatives and the myocardial function study by the quantitative assessment of the separated metabolic fractions. The used radiopharmaceutical is 9MPA(15-(p-[1-125]iodophenyl)-9-methylpenta decanoic acid), which is designed to inhibit the β-oxidative metabolic process with containing methyl-branch at the odd-numbered position. In result, we have demonstrated the separation system of myocardial metabolites by two-dimensional TLC method, which showed the well-separation of the main two type myocardial metabolites --storage type metabolites(triglycerides) and β-oxidation type metabolites --on the same TLC plates and then have shown the evaluating method of the myocardial function by the radioactivity measurement of each separated fraction. Further, we have applied the above method to the CHF(chronic heart failure) heart, which is a rat model of dilated cardiomyopathy induced by autoimmune myocarditis. It has been shown that in the CHF heart, the storage metabolic route was mainly damaged.

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  • Neutron Halo Structure in exiotic nuclei (^<17>B,^<22>N,^<23>O etc.)

    Grant number:13440075  2001 - 2003

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    SUZUKI Takeshi, IZUMIKAWA Takashi, OHTSUBO Takashi, YOSHINAGA Naotaka

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    Grant amount:\14600000 ( Direct Cost: \14600000 )

    The two--neutron removal cross section (σ_<-2n>) and the longitudinal momentum distribution of ^<15>B fragments from the breakup of ^<17>B on ^9Be were measured at 70 A MeV. The distribution in the projectile rest frame is characterized by a FWHM of 80±10 MeV/c for ^<15>B. The σ_<-2n> is found to be 0.22±0.05 b. A Glauber--type analysis of the data provides clear evidence of a two-neutron halo structure in ^<17>B.
    The reaction cross section (σ_R) for the neutron-rich nucleus ^<17>B on a carbon target has been measured at an energy of 77 AMeV by a transmission method. A large enhancement of σ_R was observed (1400mb). The density distribution of ^<17>B was deduced through the energy dependence of σ_R together with high-energy data using a finite-range Glauber model calculation under an optical limit approximation. It is confirmed that the neutron-tail in the density distribution is necessary for ^<17>B in order to reproduce the measured σ_R. Based on the assumption of a core (^<15>B) plus valence two-neutron picture, the mixture of v (2s_<1/2>) and v (1d_<5/2>) was studied without treating the correlation between two neutrons.

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  • Study of Bohr-Weisskopf effect using low-temperature nuclear orientation

    Grant number:13640270  2001 - 2002

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    OHYA Susumu, NISHIMURA Katsuhiko, IZUMIKAWA Takuji, OHTSUBO Takashi

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    Grant amount:\3400000 ( Direct Cost: \3400000 )

    The hyperfine anomaly arises from the hyperfine interaction of the finite nuclear volume of nuclear magnetization and the hyperfine field due to Fermi-contact. The difference between the point nuclear magnetic structure and the finite magnetic structure is referred as Bohr-Weisskopf effect [2], which depends on the nuclear structure. If the spin and orbital contributions to the magnetic moment have opposite sign, the large hyperfine anomaly is expected. The study of Bohr-Weisskopf effect by this project was carried on for two years from 2001.
    Nuclear magnetic resonance on oriented nuclei (NMR-ON) experiments on Sc isotopes (A=44, 44m, 46, 47, 48) have been performed at about 10mK. The samples were prepared by recoil implantation into Fe foils using α- beams at CYRIC cyclotron, Tohoku University. The activated part of the foil was cooled down to about 10mK by a ^3He/^4He dilution refrigerator. All NMR-ON resonances for Sc isotopes (A=44, 44m, 46, 47, 48) were observed. The values of magnetic moments except ^<48>Sc are already known by the atomic beam method. From these results, the values of the hyperfine field of ^<47>ScFe and the magnetic moment of ^<48>Sc were determined as -13, 17(5) T and 3.79(1)μ_<N_3> respectively. Comparing with ^<44m>Sc the effects of Bohr-Weisskopf were determined as; ^<44>ScΔ^<44m>Sc = -1.2(12)%, ^<46>ScΔ^<44m>Sc = 1.3(7)%, ^<47>ScΔ^<44m>Sc = -1.3(7)%. We also made the sample of ^<91g.m>YFe using the mass separator at Kyoto Univ.. The NMR-ON resonances for both isotopes were observed. From the values of the resonance frequencies versus the external magnetic fields, the effects of Bohr-Weisskopf was determined as ^<91>YΔ^<91m>Y = -1(3)%. The ^<91>Y case is that the spin and orbital contributions to the magnetic moment have opposite sign. The theoretical estimation from Fujita and Arima yields that the effect is -4-5%. Detailed analysis are now in progress.

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  • Study on Hyperfine Interaction of Defects in Semiconductor Using radioactive Nuclei.

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    Grant type:Competitive

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  • 放射性核を用いた半導体中格子欠陥の超微細相互作用の研究

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    Grant type:Competitive

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Teaching Experience (researchmap)

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Teaching Experience

  • 放射線防護学特論

    2022
    Institution name:新潟大学

  • 放射線関連法規

    2021
    Institution name:新潟大学

  • 放射線管理学実験

    2020
    Institution name:新潟大学

  • 医学物理学総論

    2020
    Institution name:新潟大学

  • 放射線防護学特論

    2020
    Institution name:新潟大学

  • 医学物理学入門

    2016
    Institution name:新潟大学

  • 放射化学実験

    2008
    Institution name:新潟大学

  • RI検査科学

    2008
    Institution name:新潟大学

  • RI検査科学実習

    2008
    -
    2017
    Institution name:新潟大学

  • 基礎科学演習

    2008
    -
    2016
    Institution name:新潟大学

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