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题名: Quantum chaotic motion of a single particle in heavy nuclei
作者: Gu, JZ ;  Wu, XZ ;  Zhou, YZ ;  Zhao, EG
刊名: NUCLEAR PHYSICS A
出版日期: 1997
卷号: 625, 期号:3, 页码:621-632
关键词: SHELL-MODEL ;  STATISTICAL PROPERTIES ;  ENERGY-LEVELS ;  FLUCTUATIONS ;  POTENTIALS ;  SPECTRUM ;  BEHAVIOR ;  PHYSICS
学科分类: Physics
通讯作者: Gu, JZ , CCAST,WORLD LAB,POB 8730,BEIJING 100080,PEOPLES R CHINA.
部门归属: ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA; CHINA INST ATOM ENERGY,BEIJING 102413,PEOPLES R CHINA
英文摘要: In the framework of the two-center shell model we calculate the nearest neighbor level spacing distribution and spectral rigidity of single-particle energy levels of heavy nuclei when the shape parameters are changed systematically, In the two cases of the single-particle Hamiltonian with and without the spin-orbit coupling l.s and square angular momentum l(2) terms, the shape parameter regions are determined respectively, in which both of the spacing distribution and spectral rigidity approach the predictions of the Gaussian orthogonal ensemble of random matrix theory, In both cases it is shown that a considerable octupole-like deformation is necessary to induce the chaotic single-particle motion, Moreover, the occurrence of the chaotic motion not only appears in the heavy nuclei with oblate shapes but also in prolate ones with a proper neck. The neck appreciably influences the occurrence of the chaotic motion when the separation between the two centers is medium or larger It is exhibited that the level repulsion which is strongly related to the nuclear deformation governs the regularity (chaoticity) of the single-particle motion. We find that the l.s term obviously favors the chaotic motion, however, the l(2) term only slightly affects the chaotic motion, In addition, it is implied that when the two terms are taken into account, the chaotic motion occurs even in very elongated nuclei, (C) 1997 Elsevier Science B.V.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12409
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Gu, JZ,Wu, XZ,Zhou, YZ,et al. Quantum chaotic motion of a single particle in heavy nuclei[J]. NUCLEAR PHYSICS A,1997,625(3):621-632.
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