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

GUO Jian-You; SHENG Zong-Qiang; FANG Xiang-Zheng

doi:10.1088/1674-1137/32/11/008

Chinese Physics C> 2008, Vol. 32> Issue(11) : 886-891 DOI: 10.1088/1674-1137/32/11/008

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

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Abstract：
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
superdeformed 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.

References

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GUO Jian-You, SHENG Zong-Qiang and FANG Xiang-Zheng. A systematic study of the superdeformation of Pb isotopes with relativistic mean field theory[J]. Chinese Physics C, 2008, 32(11): 886-891. doi: 10.1088/1674-1137/32/11/008

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Received: 2008-02-26
Revised: 2008-05-19

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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

Corresponding author: GUO Jian-You,

Received Date: 2008-02-26

Accepted Date: 2008-05-19

Available Online: 2008-11-05

Abstract:

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
superdeformed 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.

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

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