Shell Model Investigation of High Spin States for Ce Isotopes

• 作者: Liu, Yong Sang, Jianping
• 来源期刊: 原子核物理：英文版
• 学科: 物理学
• 关键词: Truncated shell model BOSON-FERMION expansion ^130~134Ce ISOTOPES HIGH-SPIN states
• 年，卷（期）: 1994,（2）
• 页码范围: 146-152
• 页数: 7页
• 分类号: O4

摘要

【正】 -A truncated shell model approach is presented for studying the properties oflow-lying states as well as the high-spin states in even-even nuclei with the help of thegeneralized boson-fermion expansion technique.The primary fermion state space isspanned by the interacting valence protons and neutrons with effective nucleon-nucleonforce.The truncated model space is considered as a direct sum of two subspaces corre-sponding to the configurations of（sd）^N and（sd）^N-1,respectively,plus a broken fermionpair.Numerical calculations are carried out for ^130～134Ce isotopes.The calculated spec-trum reproduces the experimental data quite well,especially the backbending appearingin these nuclei.The results suggest that the approach is able to describe the spectroscopyof states with angular momenta up to J≈20.