八极形变核的反射不对称壳模型描述(英文)  

Reflection Asymmetric Shell Model for Octupole Nuclei

作　　者：陈永寿[1] 

机构地区：[1]中国原子能科学研究院

出　　处：《原子核物理评论》2004年第2期130-136,共7页Nuclear Physics Review

基　　金：国家自然科学基金资助项目 ( 10 0 75 0 78,1993 5 0 3 0 ,10 0 470 0 1);国家重点基础研究发展计划资助项目 (G2 0 0 0 0 774)~~

摘　　要：发展反射不对称壳模型 ,描述八极形变核 .哈密尔顿量包含了四极、八极和十六极多极力 ,单极和四极对力 .壳模型空间由八极形变轴对称Nilsson势加BCS的投影基矢构成 .理论模型再现了和解释了实验八极转动带的基本特性 .理论计算很好地再现了190 ,194 Hg的超形变转动带实验谱 ,从而为八极超形变转动带的可能的实验证据提供了理论支持 .The reflection asymmetric shell model approach has been developed for the description of octupole deformed nuclei. The Q· Q forces of quadrupole, octupole and hexadecapole as well as the monopole and quadrupole pairings are included in the Hamiltonian. The shell model space is spanned by a selected set of the projected axial and octupole Nilsson + BSC basis. The general features of experimental octupole rotational bands can be reproduced and interpreted by the present model. The experimental super-deformed band states in()^(190, 194)Hg are well reproduced by the present calculations, which provide theoretical support to the possible experimental evidence for the discovery of the octupole super-deformed rotational bands.

关 键 词：八极转动带 壳模型 超形变 哈密尔顿量 原子核物理 

分 类 号：O571[理学—粒子物理与原子核物理]