| Project/Area Number |
25400245
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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 | Chiba University |
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Principal Investigator |
Nakada Hitoshi 千葉大学, 理学(系)研究科(研究院), 教授 (80221448)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | 核準位密度 / 殻模型モンテカルロ法 / 殻構造 / 集団運動 / 平均場近似 / 殻模型 / 量子モンテカルロ法 / isotope shift / 3核子間力 / スピン・軌道ポテンシャル |
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| Outline of Final Research Achievements |
The nuclear level densities have been described from microscopic standpoints using the shell-model Monte Carlo methods. Level densities and shape change of the odd-neutron nuclei in the rare-earth region are successfully reproduced by the same framework with those for the surrounding even-even nuclei. Parity-dependence of the level densities of the Ni-region nuclei is also reproduced in an extended model space. Based on these achievements and comparing them to the results of the finite-temperature mean-field approximations, effects of the vibrational and rotational collective motions have been investigated. Influence of the particle-number conservation has been investigated as well. Besides, by self-consistent mean-field calculations with semi-realistic effective interactions, shell structure and its variation, which are manifested by the magic numbers, have been overviewed, which are compatible with the experimental data.
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