Neutron skin of Ni isotopes

• Project/Area Number: 24244024
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Saitama University
• Principal Investigator: SUZUKI Takeshi 埼玉大学, 理工学研究科, 教授 (10196842)
• Co-Investigator(Kenkyū-buntansha): YAMAGUCHI Takayuki 埼玉大学, 理工学研究科, 准教授 (10375595) ; FUKUDA Mitsunori 大阪大学, 理学系研究科, 准教授 (50218939) ; IZUMIKAWA Takuji 新潟大学, 研究機構, 准教授 (60282985) ; OHTSUBO Takashi 新潟大学, 自然科学系, 准教授 (70262425) ; NISHIMURA Daiki 東京理科大学, 理工学部, 助教 (30612147)
• Project Period (FY): 2012-05-31 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥31,850,000 (Direct Cost: ¥24,500,000、Indirect Cost: ¥7,350,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2013: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000); Fiscal Year 2012: ¥20,670,000 (Direct Cost: ¥15,900,000、Indirect Cost: ¥4,770,000)
• Keywords: 中性子スキン / 反応断面積 / 荷電変化断面積 / 中性子分布半径 / 陽子分布半径 / 核半径 / 国際研究者交流ドイツ

Outline of Final Research Achievements

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.

Research Products

• [Int'l Joint Research] カザフスタン原子核研究所（INP）/アルファラビ国立大学(カザフスタン)
• [Int'l Joint Research] 重イオン科学研究所(ドイツ)
• [Journal Article] Reaction cross sections for 8He and 14B on proton target for the separation of proton and neutron density distributions (2015)
  • Author(s): M. Tanaka, M. Fukuda, D. Nishimura, S. Suzuki, M. Takechi, M. Mihara, K. Matsuta, Y. Morita, Y. Kamisho, J. Ohno, et al.
  • Journal Title: JPS Conf. Proc. Volume: 6 Pages: 0200261-6
  • DOI: 10.7566/jpscp.6.020026
  • Peer Reviewed / Open Access
• [Journal Article] Nucleon Density Distribution of the Proton Drip-Line Nucleus 12N Studied via Reaction Cross Sections (2015)
  • Author(s): M. Fukuda, Y. Morita, D. Nishimura, M. Takechi, K. Iwamoto, M. Wakabayashi, Y. Kamisho, J. Ohno, M. Tanaka, R. Kanbe, et al.
  • Journal Title: JPS Conf. Proc. Volume: 6 Pages: 0301031-3
  • DOI: 10.7566/jpscp.6.030103
  • Peer Reviewed / Open Access
• [Journal Article] Production of Spin Polarized 58Cu and its Magnetic Moment (2015)
  • Author(s): M. Mihara, M. Fukuda, T. Izumikawa, T. Ohtsubo, D. Nishimura, T. Suzuki, M. Takechi, et al.
  • Journal Title: JPS Conf. Proc. Volume: 6 Pages: 0301141-3
  • DOI: 10.7566/jpscp.6.030114
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Spatial distributions of photons in plastic scintillator detected by multi-anode photomultiplier for heavy-ion position determination (2015)
  • Author(s): S. Omika, T. Yamaguchi, M. Fukuda, A. Kitagawa, S. Matsunaga, D. Nagae, D. Nishimura, T. Nishimura, A. Ozawa, S. Sato, K. Sawahata, T. Suzuki, Y. Takeuchi
  • Journal Title: Nuclear Instruments and Methods in Physics Research A Volume: 797 Pages: 247-254
  • DOI: 10.1016/j.nima.2015.06.050
  • Peer Reviewed
• [Journal Article] Beta-NMR study of boron in diamond (2015)
  • Author(s): T. Izumikawa, M. Fukuda, T. Ohtsubo, et al.
  • Journal Title: Hyp. Interact. Volume: 231 Issue: 1-3 Pages: 11-14
  • DOI: 10.1007/s10751-014-1090-z
  • Peer Reviewed
• [Journal Article] Evidence of halo structure in 37Mg observed via reaction cross sections and intruder orbitals beyond the island of inversion (2014)
  • Author(s): M. Takechi, S. Suzuki, D. Nishimura, M. Fukuda, T. Ohtsubo, M. Nagashima, T. Suzuki, T. Yamaguchi, A. Ozawa, T. Moriguchi, H. Ohishi, T. Sumikama, H. Geissel, N. Aoi, Rui-Jiu Chen, De-Qing Fang, N. Fukuda, S. Fukuoka, H. Furuki, N. Inabe et al.
  • Journal Title: Physical Review C Volume: 90 Issue: 6
  • DOI: 10.1103/physrevc.90.061305
  • Peer Reviewed / Open Access
• [Journal Article] Measurements of interaction cross sections for 22-35Na isotopes (2014)
  • Author(s): S. Suzuki, M. Takechi, T. Ohtsubo, D. Nishimura, M. Fukuda, T. Kuboki, M. Nagashima, T. Suzuki, T. Yamaguchi, A. Ozawa, H. Ohishi, T. Moriguchi, T. Sumikama, H. Geissel, N. Aoi, Rui-Jiu Chen, De-Qing Fang, N. Fukuda, S. Fukuoka, H. Furuki, 他27名
  • Journal Title: Eur. Phys. J. (Web of Conferences) Volume: 66 Pages: 03084-03084
  • DOI: 10.1051/epjconf/20146603084
  • Peer Reviewed
• [Journal Article] Charge-changing interactions probing point-proton radii of nuclei (2014)
  • Author(s): S. Yamaki, J. Kouno, D. Nishimura, M. Nagashima, M. Takechi, K. Sato, K. Abe, Y. Abe, M. Fukuda, H. Furuki, I. Hachiuma, A. Homma, N. Ichihashi, C. Ichikawa, N. Inaba, T. Ito, K. Iwamoto, T. Izumikawa, Y. Kamisho, N. Kikuchi, S. Kinno, A. Kitagawa, T. Kojima, T. Kuboki, M. Mihara, .S. Miyazawa, S. Momota, Y. Morita, D. Nagae, Y. Nakamura, K. Namihira, R. Nishikiori, I. Nishizuka, T. Niwa, M. Ogura, Y. Ohkuma, T. Ohtsubo, S. Okada, J. Ohno, A. Ozawa, Y. Saito, T. Sakai, S. Sato, D. Sera, F. Suzaki, S. Suzuki, S. Suzuki, T. Suzuki, M. Taguchi, H. Uenishi, M. Wakabayashi, D. Watanabe, M. Yaguchi, S. Yasumoto, and T. Yamaguchi
  • Journal Title: Eur. Phys. J. Volume: 66 Pages: 03099-03099
  • DOI: 10.1051/epjconf/20146603099
  • Peer Reviewed
• [Journal Article] Structure of 8Li from a reaction cross-section measurement (2014)
  • Author(s): G. W. Fan, M. Fukuda,T. Suzuki et al.,
  • Journal Title: Phys. Rev. C Volume: 90 Issue: 4
  • DOI: 10.1103/physrevc.90.044321
  • Peer Reviewed
• [Journal Article] Density distribution of 14Be from reaction cross-section measurements (2014)
  • Author(s): T. Moriguchi, A. Ozawa, T. Suzuki, et al.,
  • Journal Title: Nucl. Phys. A Volume: 929 Pages: 83-93
  • DOI: 10.1016/j.nuclphysa.2014.06.003
  • Peer Reviewed
• [Journal Article] Charge-changing cross sections of ^<30>Ne, ^<32,33>Na with a proton target (2014)
  • Author(s): A. Ozawa, S. Ishimotoほか
  • Journal Title: Phys. Rev Volume: C89 Issue: 4 Pages: 44602-44602
  • DOI: 10.1103/physrevc.89.044602
  • Peer Reviewed
• [Journal Article] Search for halo nucleus in Mg isotopes through the measurements of reaction cross sections towards the vicinity of neutron drip line (2014)
  • Author(s): M. Takechi, S. Suzuki, D. Nishimura, M. Fukuda, T. Ohtsubo, M. Nagashima, T. Suzuki, T. Yamaguchi, A. Ozawa, 他47名
  • Journal Title: Eur. Phys. J. Volume: 66 Pages: 02101-02101
  • DOI: 10.1051/epjconf/20146602101
  • Peer Reviewed
• [Journal Article] Density distributions of ^<11>Li deduced from reaction cross-section measurements (2013)
  • Author(s): T. Moriguchi, A. Ozawa, S. Ishimoto, Y. Abe, M. Fukuda, I. Hachiuma, Y. Ishibashi, Y. Ito, T. Kuboki, M. Lantz, D. Nagae, K. Namihira, D. Nishimura, T. Ohtsubo, H. Ooishi, T. Suda, H. Suzuki, T. Suzuki, M. Takechi, K. Tanaka, and T. Yamaguchi
  • Journal Title: Phys.Rev Volume: C88 Issue: 2 Pages: 24610-24610
  • DOI: 10.1103/physrevc.88.024610
  • Peer Reviewed
• [Journal Article] High-resolution measurement of the time-modulated orbital electron capture and of the β+ decay of hydrogen-like 142Pm60+ ions (2013)
  • Author(s): P. Kienle,T. Izumikawa(18番目),T. Suzuki(36番目), T. Yamaguchi(45番目), T. Ohtsubo(47番目) 総員47名
  • Journal Title: Phys. Lett. B Volume: 726 Issue: 4-5 Pages: 638-645
  • DOI: 10.1016/j.physletb.2013.09.033
  • Peer Reviewed
• [Journal Article] Performance of high-resolution position-sensitive detectors developed for storage-ring decay experiments (2013)
  • Author(s): T. Yamaguchi(1番目), T. Izumikawa(3番目), T. Suzuki(6番目),T. Ohtsubo(19 番目), 総員23名
  • Journal Title: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms Volume: 317 Pages: 697-700
  • DOI: 10.1016/j.nimb.2013.07.056
  • Peer Reviewed / Open Access
• [Journal Article] Systematic study of individual charge-changing cross sections of intermediate-energy secondary beams (2013)
  • Author(s): S. Yamaki, T. Yamaguchi, J. Kouno, K. Sato, N. Ichihashi, T. Suzuki, 他32名
  • Journal Title: Nucl. Instrum. Methods Phys. Res. Volume: B 317 Pages: 774-778
  • DOI: 10.1016/j.nimb.2013.05.057
  • Peer Reviewed / Open Access
• [Journal Article] Direct Observation of Long-Lived Isomers in 212Bi (2013)
  • Author(s): L. Chen， T. Ohtsubo（27番目）， T. Yamaguchi （43番目）総員43名
  • Journal Title: Phys. Rev. Lett. Volume: 110 Issue: 10
  • DOI: 10.1103/physrevlett.109.102501
  • Peer Reviewed
• [Journal Article] Half-life measurements of stored fully-ionized and hydrogen-like 122I ions (2012)
  • Author(s): R. Atanasov, T. Izumikawa（13番目）, T. Ohtsubo（26番目）,T. Suzuki（36番目）, T. Yamaguchi（42番目）総員42名
  • Journal Title: Eur. Phys. J. Volume: 48 Issue: 2
  • DOI: 10.1140/epja/i2012-12022-9
  • Peer Reviewed
• [Presentation] Measurement of reaction cross sections for 9-12C isotopes (2016)
  • Author(s): K. NIshizuka
  • Organizer: Nuclei in the Cosmos XIV
  • Place of Presentation: Toki Messe, Niigata-City, Niigata
  • Year and Date: 2016-06-19
  • Int'l Joint Research
• [Presentation] 陽子過剰側 C同位体の反応断面積 (2016)
  • Author(s): 西塚賢治
  • Organizer: 日本物理学会
  • Place of Presentation: 東北学院大学・泉キャンパス（宮城県・仙台市）
  • Year and Date: 2016-03-19
• [Presentation] 多層電極型イオンチェンバーに於けるδ線の観測 (2016)
  • Author(s): 竹内勇貴
  • Organizer: 日本物理学会
  • Place of Presentation: 東北学院大学・泉キャンパス（宮城県・仙台市）
  • Year and Date: 2016-03-19
• [Presentation] 質量測定用飛行時間検出器の開発 (2016)
  • Author(s): 鈴木伸司
  • Organizer: 日本物理学会
  • Place of Presentation: 東北学院大学・泉キャンパス（宮城県・仙台市）
  • Year and Date: 2016-03-19
• [Presentation] 陽子pick-up反応における生成断面積のエネルギー依存性 (2015)
  • Author(s): 只野奈津生
  • Organizer: 日本物理学会
  • Place of Presentation: 大阪市立大学・杉本キャンパス（大阪府・大阪市）
  • Year and Date: 2015-09-27
• [Presentation] 稀少RIリング個別入射方式のための同軸管の開発 (2015)
  • Author(s): 大甕舜一朗
  • Organizer: 日本物理学会
  • Place of Presentation: 東北学院大学・泉キャンパス（宮城県・仙台市）
  • Year and Date: 2015-09-27
• [Presentation] 核子ピックアップ反応による核内核子運動量分布の研究 (2015)
  • Author(s): 福田光順，只野奈津生，山岡慎太郎，他
  • Organizer: 日本物理学会
  • Place of Presentation: 「早稲田大学（東京都新宿区）」
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] 300MeV/uにおける陽子ピックアップ反応の系統的測定 (2014)
  • Author(s): 河野準平
  • Organizer: 日本物理学会
  • Place of Presentation: 「東海大学（神奈川県平塚市）
  • Year and Date: 2014-03-27 – 2014-03-30
• [Presentation] Cherenkov light detection as a velocity selector for uranium fission products at intermediate energies (2013)
  • Author(s): T. Yamaguchi
  • Organizer: 8th International workshop on Ring imaging Cherenkov Detectors (RICH2013)
  • Place of Presentation: 「葉山セミナーハウス（神奈川県逗子市）」
  • Year and Date: 2013-12-02 – 2013-12-06
• [Presentation] Rare-RI Ring project in RIKEN (2013)
  • Author(s): T. Yamaguchi
  • Organizer: Sino-German Symposium on "High precision experiments with stored exotic and stable nuclei"
  • Place of Presentation: 蘭州（中国）
  • Year and Date: 2013-11-07 – 2013-11-10
  • Invited
• [Presentation] 陽子過剰側Mg同位体の反応断面積測定 (2013)
  • Author(s): 本間彰
  • Organizer: 日本物理学会
  • Place of Presentation: 「高知大学（高知県高知市）」
  • Year and Date: 2013-09-20 – 2013-09-24
• [Presentation] Charge-changing interactions probing point-proton radii of nuclei (2013)
  • Author(s): T. Yamaguchi et al.
  • Organizer: INPC2013 International Nuclear Physics Conference
  • Place of Presentation: Firenze（Italy）
  • Year and Date: 2013-06-02 – 2013-06-07
• [Presentation] 核子当たり300MeVでの 中重核の荷電変化断面積の系統的測定 (2012)
  • Author(s): 山木さやか
  • Organizer: 日本物理学会
  • Place of Presentation: 京都産業大学
• [Presentation] HIMACに於ける中間エネルギー核破砕片生成断面積の測定 (2012)
  • Author(s): 河野準平
  • Organizer: 日本物理学会
  • Place of Presentation: 京都産業大学
• [Presentation] Systematic study on individual charge-changing cross-sections of intermediate-energy secondary beams (2012)
  • Author(s): 山口貴之
  • Organizer: EMIS2012（原子核国際会議）
  • Place of Presentation: 松江コンヴェンションセンター（松江市）
• [Presentation] Design study of a resonant Schottky pick-up for Rare-RI Ring project (2012)
  • Author(s): 洲嵜ふみ
  • Organizer: EMIS2012（原子核国際会議）
  • Place of Presentation: 松江コンヴェンションセンター（松江市）
• [Remarks] T. Suzuki's Home Page
  • URL: http://park.saitama-u.ac.jp/~suzuki/index.html#research
• [Remarks] The GSI Fragment Separator Website
  • URL: https://www-win.gsi.de/frs/index.htm
• [Remarks] http://www.ne.phy.saitama-u.ac.jp