Quantum chaotic motion of a single particle in heavy nuclei

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	Quantum chaotic motion of a single particle in heavy nuclei
	Gu, JZ; Wu, XZ; Zhou, YZ; Zhao, EG; Gu, JZ , CCAST,WORLD LAB,POB 8730,BEIJING 100080,PEOPLES R CHINA.
刊名	NUCLEAR PHYSICS A
	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
ISSN号	0375-9474
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.
学科主题	Physics
URL标识	查看原文
公开日期	2012-08-29
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/12409]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Gu, JZ , CCAST,WORLD LAB,POB 8730,BEIJING 100080,PEOPLES R CHINA.
推荐引用方式 GB/T 7714	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.
APA	Gu, JZ,Wu, XZ,Zhou, YZ,Zhao, EG,&Gu, JZ , CCAST,WORLD LAB,POB 8730,BEIJING 100080,PEOPLES R CHINA..(1997).Quantum chaotic motion of a single particle in heavy nuclei.NUCLEAR PHYSICS A,625(3),621-632.
MLA	Gu, JZ,et al."Quantum chaotic motion of a single particle in heavy nuclei".NUCLEAR PHYSICS A 625.3(1997):621-632.