Low-lying states and isospin excitation in the Ge isotopes  

作　　者：Falih H. Al-Khudair 

机构地区：[1]Department of Physics,Tsinghua University [2]Center of Nuclear Theory,Lanzhou Heavy Ion National Laboratory [3]Department of Physics,College of Education,Basrah University

出　　处：《Chinese Physics C》2009年第7期538-546,共9页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (10325521, 60635040);SRFDP Program of Ministry of Education of China (20060003048)

摘　　要：The level structure of ^64-70Ge isotopes has been studied within the framework of the interacting boson model-3（IBM-3） . The symmetry character in the proton and neutron degrees of freedom of the energy levels has been investigated. The isospin excitation states（T 〉 Tz） have been assigned for the ^64Ge（N = Z） nucleus. Some intruder states in these nuclei have been suggested. The calculated energy levels and transition probabilities are in good agreement with recent experimental data. The study indicates that the Ge isotopes are in transition from γ-unstable to vibrational.The level structure of ^64-70Ge isotopes has been studied within the framework of the interacting boson model-3（IBM-3） . The symmetry character in the proton and neutron degrees of freedom of the energy levels has been investigated. The isospin excitation states（T 〉 Tz） have been assigned for the ^64Ge（N = Z） nucleus. Some intruder states in these nuclei have been suggested. The calculated energy levels and transition probabilities are in good agreement with recent experimental data. The study indicates that the Ge isotopes are in transition from γ-unstable to vibrational.

关 键 词：IBM-3 ISOSPIN Z ≈ N nuclei  ^64-70Ge isotopes 

分 类 号：O571[理学—粒子物理与原子核物理]