2012 Fiscal Year Final Research Report
Spin responses of unstable exotic nuclei studied by exothermic charge-exchange reactions in inverse-kinematics
| Project/Area Number |
22340049
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | The Institute of Physical and Chemical Research |
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Principal Investigator |
SAKAI Hideyuki 独立行政法人理化学研究所, 共用促進・産業連携部, 部長 (90030030)
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| Co-Investigator(Kenkyū-buntansha) |
YAKO Kentaro 東京大学, 大学院・理学系研究科, 准教授 (50361572)
SHIMOURA Susumu 東京大学, 大学院・理学系研究科, 教授 (10170995)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 発熱荷電交換反応 / 不安定核 / スピン応答 / ガモフ・テラー巨大共鳴 |
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| Research Abstract |
Using an unstable exotic beam of ^(12)Be, the exothermic charge-exchange (p,n) reaction which was not possible in the past was performed for the first time. The spin responses of very neutron rich nucleus (N-Z)/A=0.33 were studied. In particular, information on: (1) Gamow-Teller giant resonance and its strength, (2)Low lying spin dipole states as an indication of breakdown of neutron closed shell structure, were obtained. Furthermore the measurement was extended successfully to more neutron rich nucleus ^８He which has (N-Z)/A=0.5.
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