2011 Fiscal Year Final Research Report
Study on Novel Quadrupole Collective States in Neutron-Rich Medium-Heavy Nuclei
| Project/Area Number |
20740127
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
SHIMIZU Noritaka 東京大学, 大学院・理学系研究科, 特任准教授 (30419254)
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| Project Period (FY) |
2008 – 2011
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| Keywords | 原子核(理論) / 原子核殻模型 / 4重極集団運動 |
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| Research Abstract |
We studied the nuclear structure of axially symmetric deformation of samarium isotopes and tri-axially deformed states of neutron-rich xenon, barium isotopes based on the nuclear shell model. In medium-heavy nuclei, the conventional diagonalization method utilizing the Lanczos method is infeasible due to the huge size of the Hilbert space. In order to overcome this difficulty, we applied the Monte Carlo shell with quasi-particle-vacuum basis and the energy-variance extrapolation in the Monte Carlo shell model with Slater-determinant basis, and demonstrated that they work well in studying the nuclear structures of medium-heavy nuclei in which the pairing correlation is important.
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