| 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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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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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 / エキゾチック回転状態 / 角運動量射影 / パリティ射影 / 高スピン原子核状態 / 正四面体型変形 / 量子数射影計算 / 正四面体変形状態 |
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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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