Study of restoration mechanism of the spin-isospin symmetry in 11Li

2015 Fiscal Year Final Research Report

• Project/Area Number: 24740187
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Institute of Physical and Chemical Research
• Principal Investigator: Sasano Masaki 国立研究開発法人理化学研究所, 仁科加速器研究センター, 研究員 (10515802)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: スピン・アイソスピン対称性 / 中性子ハロー / 中性子スキン / ガモフ・テラー遷移 / 巨大共鳴 / 不安定核

Outline of Final Research Achievements

It is an essential step in nuclear physics to elucidate the effect of the spin-isospin symmetry on nuclei through studies of the Gamow-Teller giant resonance, which is simultaneous flips of spin and isospin directions. In this funding period, the project of measuring GT giant resonances in neutron halo nuclei including 11Li was approved in RIBF. Moreover, an experiment was performed to search a GT giant resonance in 132Sn, which, similarly as 11Li case, is a good candidate to observe the effect of the spin-isospin symmetry due to pure neutron material in the nuclear surface (neutron skin). The GT giant resonance in 132Sn was successfully identified.

Free Research Field

原子核物理学