2013 Fiscal Year Final Research Report
Study of exotic deformed high-spin states in nuclei
| Project/Area Number |
22540285
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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 |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Kyushu University |
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Principal Investigator |
SHIMIZU Yoshifumi 九州大学, 理学(系)研究科(研究院), 准教授 (90187469)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | エキゾチック変形 / 正四面体変形 / 原子核高スピン状態 / 量子数射影法 / 角運動量とパリティの同時射影 |
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| Research Abstract |
In this project, the exotic deformation and its associated collective rotational excitations have been studied up to the high-spin states. As for the exotic deformation we focused on the tetrahedral deformation, which has one of the higher point-group symmetries and is very different from the usual quadrupole deformation (elliptic shape). It was predicted that a very characteristic quantum mechanical spectrum appears for the tetrahedrally-symmetric deformed nucleus. We have, for the first time, succeeded to show that such a characteristic spectrum indeed emerges in tetrahedrally-deformed nuclei by employing fully microscopic quantum-number-projection calculation, i.e., by angular momentum, number, and parity projections at the same time. Although the tetrahedrally-deformed nuclear states have not yet confirmed experimentally, it can be expected that the present result gives an important clue for the future study of this interesting exotic deformation.
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[Journal Article] Ground-state properties of neutron-rich Mg isotopes2014
Author(s)
S. Watanabe, K. Minomo, M. Shimada, S. Tagami, M. Kimura, M. Takechi, M. Fukuda, D. Nishimura, T. Suzuki, T. Matsumoto, Y. R. Shimizu, and Yahiro
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Journal Title
Physical Review C
Volume: 89:4
Pages: 044610–1–13
DOI
Peer Reviewed
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