A systematic study of the superdeformation of Pb isotopes with relativistic mean field theory

作     者：郭建友 圣宗强 方向正 

作者机构：School of Physics and Material Science Anhui University Department of Mathematics and Physics Anhui University of Science and Technology 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2008年第32卷第11期

页      面：886-891页

核心收录：

学科分类：07[理学] 070203[理学-原子与分子物理] 0702[理学-物理学] 

基　　金：Supported by National Natural Science Foundation of China (10475001,10675001) Program for New Century Excellent Talents in University of China (NCET-05-0558) Program for Excellent Talents in Anhui Province University (2007Z018) Education Committee Foundation of Anhui Province (2006KJ259B) 

主　　题：Pb isotopes superdeformation relativistic mean field theory 

摘      要：The microscopically constrained relativistic mean field theory is used to investigate the superdeformation for Pb isotopes. The calculations have been performed with the four different interactions NL3, PK1, TM1 and NLSH, and show that there exists a clear superdeformed minimum in the potential energy surfaces. The excitation energy, deformation and depth of the well in the *** minimum are comparable for the four different interactions. Furthermore the trend for the change of the superdeformed excitation energy with neutron number is correctly reproduced. The calculated two-neutron separation energy in the ground state and superdeformed minimum together with their differences are in agreement with the available data. The larger energy difference appearing in the superdeformed minimum reflects a lower average level density at superdeformations for Pb isotopes.