Measurement of neutron-skin thickness by isospin-generalizedproton elastic scattering

2012 Fiscal Year Final Research Report

• Project/Area Number: 22740185
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Kyushu University (2011-2012); The Institute of Physical and Chemical Research (2010)
• Principal Investigator: SAKAGUCHI Satoshi 九州大学, 大学院・理学研究院, 助教 (70569566)
• Project Period (FY): 2010 – 2012
• Keywords: 原子核(実験) / 原子核(理論) / 中性子スキン / 弾性散乱 / 荷電交換反応

Research Abstract

Charge-exchange (p,n) reaction to isobaric analog state has been investigated for the purpose of developing a new approach to the measurement of neutron-skin thickness. This reaction is equivalent to the proton elastic scattering under the isospin symmetry, and the slope of its differential cross section is expected to be determined by the root-mean-square radius of the isovector component of the density distribution. The differential cross sections of the (p,n) IAS reaction from 116Sn and 120Sn have been measured and compared as functions of the momentum transfer. It was found that the slope of120Sn is steeper than that of 116Sn by 4%, which is expected to be the consequence of the fact that120Sn has a thicker neutron skin than 116Sn

Research Products

• [Presentation] 170MeVにおける錫同位体からの(p,n) IAS反応 (2013)
  • Author(s): 坂口聡志
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学
  • Year and Date: 2013-03-26
• [Presentation] Charge-exchange (p,n) reaction to isobaric analog state as probe for neutron-skin (2012)
  • Author(s): S. Sakaguchi, T. Uesaka, H. Sakaguchi, T. Wakasa, M. Sasano, R. Chen, M. Dozono, K. Hatanaka, T. Kawabata, S. Kawase, Y. Kikuchi, Y. Maeda, H. Matsubara, H. Miyasako, Y. Nozawa, M. Okamoto, S. Ota, H. Sakai, T. Saito, H. Shima, T. Suzuki, A. Tamii, S. Ter
  • Organizer: Direct Reactions with Exotic Beams (DREB2012)
  • Place of Presentation: Pisa, Italy
  • Year and Date: 2012-03-27
• [Presentation] Isospin-generalized proton elastic scattering from 116Sn and 120Sn at 170 MeV (2011)
  • Author(s): S. Sakaguchi, T. Uesaka, T. Wakasa, H. Sakaguchi, R. Chen, M. Dozono, S. Kawase, Y. Maeda, H. Miyasako, M. Okamoto, S. Ota, H. Sakai, T. Saito, M. Sasano, T. Shima, T. Suzuki, A. Tamii, S. Terashima, H. Tokieda, K. Hatanaka, Y. Yasuda and K. Yako (poster)
  • Organizer: he 1st International Conference on Advances in Radioactive Isotope Science (ARIS2011)
  • Place of Presentation: Leuven, Belgium
  • Year and Date: 2011-05-31
• [Presentation] 170MeVにおける116,120Snのアイソスピン一般化陽子弾性散乱 (2010)
  • Author(s): 坂口聡志
  • Organizer: 日本物理学会2010年秋季大会
  • Place of Presentation: 九州工業大学
  • Year and Date: 2010-09-14