Shape coexistence in 188Pb

被引：0

作者：

陈学诗

张晓东

沈水法

石双惠

顾嘉辉

机构：

[1] Department of Modem Physics

[2] Shanghai Institute of Nuclear Research

[3] Chinese Academy of Sciences

[4] Lanzhou 730000

[5] China

[6] Shanghai 201800

[7] Lanzhou University

来源：

Science China Mathematics | 2000年 / 08期

关键词：

shape coexistence; low-lying excited states; projected shell model;

D O I：

暂无

中图分类号：

O571.3 [放射性原子核衰变];

学科分类号：

0827 ; 082701 ;

摘要：

The shape coexistence in 188Pb is investigated in terms of the projected shell model. Analyzing the experimental data with the calculated results, it is shown that the three shapes, sphere, oblate and prolate, coexist with each other in the low-lying excited states. The prolate band exhibits a mixture between two kinds of multi-particle-hole configuration. The mixing is discussed and the mixing coefficients are given, meaning the vi13/2 pair alignment happens gradually in this case. The oblate (πh9/22p-2h) band structure is predicted and the 2+ prolate state is in the range of 804-880 keV.

引用

页码：892 / 896

页数：5