Chin. Phys. Lett.  2014, Vol. 31 Issue (10): 102102    DOI: 10.1088/0256-307X/31/10/102102
NUCLEAR PHYSICS |
Tensor Force Effect on Shape Coexistence of N=28 Neutron-Rich Isotones
WANG Yan-Zhao1,2, GU Jian-Zhong2**, YU Guo-Liang3, HOU Zhao-Yu1
1Department of Mathematics and Physics, Shijiazhuang TieDao University, Shijiazhuang 050043
2China Institute of Atomic Energy, Beijing 102413
3Department of Mathematics and Physics, North China Electric Power University, Baoding 071003
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WANG Yan-Zhao, GU Jian-Zhong, YU Guo-Liang et al  2014 Chin. Phys. Lett. 31 102102
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Abstract The tensor force effect on potential energy surfaces of the N=28 neutron-rich isotones is investigated by using the deformed Skyrme–Hartree–Fock–Bogoliubov approach with the T22 interaction. It is found that, without the tensor force, 40Mg and 46Ar have prolate and spherical ground states, respectively. The ground states of 42Si and 44S are oblate. The shape coexistence in 40Mg, 42Si and 44S is evident. However, the ground state deformations of these isotones are not changed and the shape coexistence in 42Si and 44S vanishes when the tensor force is switched on. Taking 42Si as an example, the disappearance of the shape coexistence is understood by analyzing the tensor force effect on the shell correction energies.
Published: 31 October 2014
PACS:  21.30.Fe (Forces in hadronic systems and effective interactions)  
  21.60.Jz (Nuclear Density Functional Theory and extensions (includes Hartree-Fock and random-phase approximations))  
  21.10.-k (Properties of nuclei; nuclear energy levels)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/31/10/102102       OR      https://cpl.iphy.ac.cn/Y2014/V31/I10/102102
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WANG Yan-Zhao
GU Jian-Zhong
YU Guo-Liang
HOU Zhao-Yu
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