Chiral doublet bands and energy-level crossing  

作　　者：亓斌 孟杰 张双全 王守宇 彭婧 

机构地区：[1]School of Physics,and SK Lab. of Nucl. Phys. & Tech., Peking University [2]Institute of Theoretical Physics, Chinese Academy of Sciences [3]Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator [4]Department of Physics, University of Stellenbosch, Stellenbosch, South Africa [5]Department of Space Science and Applied Physics, Shandong University at Weihai [6]Department of Physics, Beijing Normal University

出　　处：《Chinese Physics C》2009年第S1期43-45,共3页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (10505002, 10435010, 10605001, 10221003);Postdoctoral Science Foundation of China (20060390371)

摘　　要：Different definitions for chiral doublet bands based on excitation energies, B(E2) and B(M1) respectively are discussed in the triaxial particle rotor model. For the ideal chiral geometry, the selection rules of the electromagnetic transitions in different band definitions are illustrated. It is also shown that the energy-level crossings between chiral doublet bands may occur.Different definitions for chiral doublet bands based on excitation energies, B(E2) and B(M1) respectively are discussed in the triaxial particle rotor model. For the ideal chiral geometry, the selection rules of the electromagnetic transitions in different band definitions are illustrated. It is also shown that the energy-level crossings between chiral doublet bands may occur.

关 键 词：chiral doublet bands band definition electromagnetic transition energy-level crossing triaxial particle rotor model 

分 类 号：O571[理学—粒子物理与原子核物理]