| Project/Area Number |
13640304
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
素粒子・核・宇宙線
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| Research Institution | Konan University |
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Principal Investigator |
YAMAGATA Tamio Konan Univ., Dpart. Of Physics, Prof., 理工学部, 教授 (50068144)
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| Co-Investigator(Kenkyū-buntansha) |
NAKAYAMA Shintaro Univ. Tokushima, Dpart. Of Physics, Prof., 総合科学部, 教授 (70116846)
AKIMURA Hidetoshi Konan Univ., Dpart. Of Physics, Associ. Prof., 理工学部, 助教授 (60319829)
UTSUNOMIYA Hiroaki Konan Univ., Dpart. Of Physics, Prof., 理工学部, 教授 (00241167)
TOYOKAWA Hiroyuki Nat. Inst. Adv. Ind. Sci. Tech., Researcher, 光技術研究部門, 研究員
OHGAKI Hideaki Kyoto Univ., Inst. Adv. Enegy, Associ. Prof., エネルギー理工学研究所, 助教授 (10335226)
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| Project Period (FY) |
2001 – 2002
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| Keywords | Nuclear Structure / Cluster Structure / Cluster excitation / 3-nucleon claster |
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| Research Abstract |
1. In order to measure the photo-nuclear reaction (PNR) cross sections for the alpha-cluster excitation in ^<6,7>Li by using the gamma-rays provided in AIST, a large neutron detector has been developed. The detection efficiency was achieved to be about 34% for 5.35 MeV neutrons. The MCNP Monte-Carlo simulation well reproduced this detection efficiency. In near future, PNR cross sections are measured with this detector.
2. Cluster structures in A=6 and 7 nuclei have been investigated by using beams from the ring cyclotron of Research Center for Nuclear Physics, Osaka University. We found (1) t+t, t+^3He and ^3He+^3He molecular structures in ^6He, ^6Li and ^6Be, respectively at the similar mass excess. These structures are believed to be the isobaric analog states of the expected ^3P state. (2) We found analog states of the alpha-cluster excitation of ^<6,7>Li in ^<6,7>Be, respectively.
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