Systematic measurements of point-proton radii for unstable nuclear beams

• Project/Area Number: 23600002
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Quantum beam science
• Research Institution: Saitama University
• Principal Investigator: YAMAGUCHI Takayuki 埼玉大学, 理工学研究科, 准教授 (10375595)
• Research Collaborator: SUZUKI Takeshi 埼玉大学, 理工学研究科, 教授 (10196842) ; SATO Kanae 埼玉大学, 理工学研究科, 大学院生 ; YAMAKI Sayaka 埼玉大学, 理工学研究科, 大学院生 ; KOUNO Junpei 埼玉大学, 理工学研究科, 大学院生 ; MATSUNAGA Satoshi 埼玉大学, 理工学研究科, 大学院生
• Project Period (FY): 2011 – 2013
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000); Fiscal Year 2013: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000); Fiscal Year 2012: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000); Fiscal Year 2011: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
• Keywords: 不安定核 / 陽子半径 / 荷電変化反応

Research Abstract

The present study demonstrates that point-proton radii of unstable nuclei can be determined from the charge-changing cross sections at intermediate energies. With the phenomenologically modified Glauber model analysis, systematic measurements of the charge-changing cross sections for stable and unstable nuclei, whose proton radii are already known, show a simple scaling law over a wide range of proton-neutron ratios. An application to neutron-rich carbon isotopes indicates a systematic evolution of proton radii and discovered a thick neutron skin. The present method was applied to medium mass nuclei such as Fe and Ni isotopes, and shows a clear correlation between the charge-changing cross sections and proton radii.

Research Products

• [Journal Article] Charge-changing cross sections of 30Ne, 32,33Na with a proton target (2014)
  • Author(s): A. Ozawa, S. Ishimotoほか
  • Journal Title: PHYSICAL REVIEW C Volume: C89 Pages: 044602-044602
  • DOI: 10.1103/physrevc.89.044602
  • 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
  • DOI: 10.1051/epjconf/20146603099
  • Peer Reviewed / Acknowledgement Compliant
• [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: EPJ Web of Conferences Volume: 66
  • DOI: 10.1051/epjconf/20146602101
  • Peer Reviewed
• [Journal Article] Inelastic process observed in charge-exchange reactions of ^<56>Fe at 500 MeV/u (2014)
  • Author(s): S. Momota, T. Yamaguchi, T. Suzuki, F. Suzuki, K. Sato, S. Yamaki, J. Kouno, A. Ozawa, R. Nishikiori, D. Nishimura, M. Fukuda, S. Suzuki, M. Nagashima, A. Kitagawa, S. Sato
  • Journal Title: Eur. Phys. J. Volume: 66
  • DOI: 10.1051/epjconf/20146603062
  • Peer Reviewed
• [Journal Article] Measurements of interaction cross sections for ^<22-35>Na 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. Volume: 66
  • DOI: 10.1051/epjconf/20146603084
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Neutron halo in ^<14>B studied via reaction cross sections (2014)
  • Author(s): 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, 他12名
  • Journal Title: Eur. Phys. J. Volume: 66
  • DOI: 10.1051/epjconf/20146602037
  • Peer Reviewed
• [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: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms Volume: B 317 Pages: 774-778
  • DOI: 10.1016/j.nimb.2013.05.057
  • Peer Reviewed / Open Access
• [Journal Article] Density distribution 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. C Volume: C88 Pages: 024610-024617
  • DOI: 10.1103/physrevc.88.024610
  • Peer Reviewed
• [Journal Article] Observation of new microsecond isomers among fission products from in-flight fission of 345 MeV/nucleon ^<23>8U (2012)
  • Author(s): D. Kameda
  • Journal Title: Physica Review C Volume: 86 Pages: 54319-54319
  • DOI: 10.1103/physrevc.86.054319
  • Peer Reviewed
• [Journal Article] Interaction cross sections for Ne isotopes towards the island of inversion and halo structures of 29^Ne and 31^Ne (2012)
  • Author(s): M.Takechi
  • Journal Title: Physics Letters B Volume: 707 Pages: 357-361
  • DOI: 10.1016/j.physletb.2011.12.028
  • Peer Reviewed
• [Journal Article] One- and two-neutron removal reactions from ^<19,20>C with a proton target (2012)
  • Author(s): A.Ozawa,T.Nakamura et al.
  • Journal Title: Phys. Rev. Volume: 064315 Pages: 64315-64315
  • DOI: 10.1103/physrevc.84.064315
  • Peer Reviewed
• [Journal Article] Scaling of charge-changing interaction cross sections and point-proton radii of neutron-rich carbon isotopes (2011)
  • Author(s): T. Yamaguchi, I. Hachiuma, A. Kitagawa, K. Namihira, S. Sato, T. Suzuki, I. Tanihata, M. Fukuda.
  • Journal Title: Phys. Rev. Lett. Volume: 107
  • DOI: 10.1103/physrevlett.107.032502
  • Peer Reviewed
• [Journal Article] Nuclear reactions of ^<19,20>C on a liquid hydrogen target measured with the superconducting TOF spectrometer (2011)
  • Author(s): T.Yamaguchi,T.Nakamura et al.
  • Journal Title: Nucl. Phys. Volume: 1-37 Pages: 1-37
  • DOI: 10.1016/j.nuclphysa.2011.05.095
  • Peer Reviewed
• [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2014年年次大会
  • Place of Presentation: 東海大学
  • Year and Date: 2014-03-28
• [Presentation] 重イオンビーム用多層電極型イオンチェンバーにおけるエネルギー分解能のガス圧力依存性 (2014)
  • Author(s): 松永達
  • Organizer: 日本物理学会2014年年次大会
  • Place of Presentation: 東海大学
  • Year and Date: 2014-03-28
• [Presentation] Charge-changing interactions probing point-proton radii of nuclei (2013)
  • Author(s): T. Yamaguchi.
  • Organizer: 25th International Nuclear Physics Conference (INPC2013)
  • Place of Presentation: Florence, Italy
• [Presentation] Charge-changing interactions probing point-proton radii of nuclei (2013)
  • Author(s): T. Yamaguchi
  • Organizer: INPC2013 International Nuclear Physics Conference
  • Place of Presentation: イタリア フィレンツェ
• [Presentation] 核子当り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2012年秋季大会
  • Place of Presentation: 京都産業大学
  • Year and Date: 2012-09-14
• [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2012年秋季大会
  • Place of Presentation: 京都産業大学
  • Year and Date: 2012-09-13
• [Presentation] 陽子過剰Fe同位体の荷電変化断面積 (2012)
  • Author(s): 佐藤加奈恵
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学
  • Year and Date: 2012-03-24
• [Presentation] Systematic study on individual charge-changing cross sections of intermediate-energy secondary beams (2012)
  • Author(s): T. Yamaguchi.
  • Organizer: XVI International Conference on Electromagnetic Isotope Separators and Techniques Related to their Applications (EMIS2012)
  • Place of Presentation: Matsue, Japan
• [Presentation] Systematic study on individual charge-changing cross-sections of intermediate-energy secondary beams (2012)
  • Author(s): T. Yamaguchi
  • Organizer: EMIS2012
  • Place of Presentation: Matsue (くにびきメッセ)
• [Remarks]
  • URL: http://www.ne.phy.saitama-u.ac.jp/~yamaguti