2017 Fiscal Year Final Research Report
Cluster-gas-like states in light nuclei
| Project/Area Number |
26400283
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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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 | Kanto Gakuin University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
FUNAKI YASURO 関東学院大学, 理工学部, 准教授 (00435679)
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Keywords | クラスターガス状態 / アルファ凝縮状態 / ホイル状態 / ホイル類似状態 / モノポール遷移 / C0遷移強度 / ハイパー核 |
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| Outline of Final Research Achievements |
The basic purpose of the present project was to disclose the novel properties of the cluster-gas-like states in light nuclei. The typical one is the Hoyle state of 12C (2nd 0+) with an alpha+alpha+alpha gas-like structure. We have focused on studying the structures of 13C and 13-Lambda-Carbon with alpha+alpha+alpha+n and alpha+alpha+alpha+Lambda models, respectively, together with the related topics. It was confirmed that the cluster-gas-like states exist in both 13C and 13-Lambda-Carbon. In the hypernucleus a“(5-Lambda-He)+alpha+alpha”gas-like state (1/2+) appears just below its threshold, where the Lambda particle is bound to one of the three alphas. On the other hand, a “alpha+alpha+alpha+n”gas-like state (1/2+) comes out around its threshold in 13C. In addition, the C0 (longitudinal electric monopole) transition strengths in 13C, which is a longstanding problem in 13C, was resolved by taking into account cluster degree of freedom in the relevant 1/2- states.
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| Free Research Field |
数物系科学
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