Nucleon-pair shell model calculations of the even-even Xe and Ba nuclei

被引：63

作者：

Luo, YA ^{[1
]}

Chen, JQ

Draayer, JP

机构：

[1] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China

[2] Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China

[3] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

来源：

NUCLEAR PHYSICS A | 2000年 / 669卷 / 1-2期

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

nucleon-pair shell model; SD truncation; even Xe; even Ba; mixed symmetry states; collective states;

D O I：

10.1016/S0375-9474(99)00818-0

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The nucleon-pair shell model, truncated to an SD subspace, is applied to Xe128-134 and Ba130-136. The spectra, eigenstates, and electromagnetic transition strengths of these nuclei, which are known to display O(6) symmetry, an described in terms of a three-parameter Hamiltonian. Agreement with experiment is good, in particular, mixed-symmetry configurations and the upward shift and fragmentation of the M1 strength with increasing neutron numbers emerges naturally. The results show that the SD subspace approximation improves with the number of pairs. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：101 / 118

页数：18

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