2016 Fiscal Year Final Research Report
Three-body resonant states in the 9Be nucleus
Project/Area Number |
25400241
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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Research Institution | Hokkaido University |
Principal Investigator |
KATO KIYOSHI 北海道大学, 理学研究院, 名誉教授 (20109416)
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Project Period (FY) |
2013-04-01 – 2017-03-31
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Keywords | 9Be光分解反応 / α+α+n クラスター模型 / 複素座標スケーリング法 / 多体共鳴状態 / 仮想状態 / クラスターダイポール共鳴 |
Outline of Final Research Achievements |
Using an α+α+n three-cluster model and the complex scaling method (CSM), we investigated the characteristic properties of the 9Be nucleus which is also used as a neutron reflector in nuclear reactors. As a result, observed energy levels of 9Be can be understood as resonant states of a Borromean system which is a three-body system having no bound subsystems except for the ground state. As for the recently observed photo-disintegration cross section, the experimental data can be shown to be explained by the calculation using the CSM. The peak of cross section can be understood to be due to a 8Be+n virtual state but not a resonant state. These results have been reported in many international conferences and 13 published papers.
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Free Research Field |
原子核物理学
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