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

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

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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 superdef.ormed 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. 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 superdef.ormed 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.

作者郭建友圣宗强方向正

机构地区 School of Physics and Material Science Department of Mathematics and Physics

出处《Chinese Physics C》 SCIE CAS CSCD 北大核心 2008年第11期886-891,共6页 中国物理C（英文版）

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)

关键词 Pb isotopes SUPERDEFORMATION relativistic mean field theory Pb isotopes, superdeformation, relativistic mean field theory

分类号 O562 [理学—原子与分子物理]

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Chinese Physics C

2008年第11期

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

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