Octupole deformation and Ra puzzle with covariant density functional theory in three-dimensional lattice space
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Published:2023-08-02
Issue:
Volume:
Page:
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ISSN:0218-3013
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Container-title:International Journal of Modern Physics E
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language:en
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Short-container-title:Int. J. Mod. Phys. E
Affiliation:
1. State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, P. R. China
Abstract
The anomaly of the residual proton–neutron interaction [Formula: see text] for Ra isotopes around [Formula: see text] deviating from the general trend, the so-called Ra puzzle, is investigated within the framework of covariant density functional theory in three-dimensional lattice space. The potential energy surfaces in [Formula: see text] plane for Ra isotopes are given by the constrained calculations. The average values of proton–neutron interaction [Formula: see text] extracted from the binding energies of Ra and Rn isotopes with axial, triaxial and reflection asymmetric calculations are compared with the data from AME2020 atomic mass evaluation. It is found that the octupole deformation provides a reasonable interpretation of the Ra puzzle.
Funder
National Natural Science Foundation of China
National Key R&D Program of China
Publisher
World Scientific Pub Co Pte Ltd
Subject
General Physics and Astronomy,Nuclear and High Energy Physics
Cited by
1 articles.
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