Possible Properties on Nuclear Shape and Stiffness Evolution:A Systematic Analysis Based on Nuclear-Energy-Surface Calculations

MENG Haiyan; WANG Hualei; CHAI Qingzhen; ZHANG Sha; YANG Jie; LIU Minliang

doi:10.11804/NuclPhysRev.34.03.481

Nuclear shape and stiffness evolutions in even-even nuclei with 50 < Z < 82 are systematically analyzed in terms of the pairing-deformation self-consistent nuclear-energy-surface calculation in (β₂,γ,β₄) deformation space. Calculated equilibrium deformations are presented and compared with other theoretical predictions and available experimental data. The stiffness parameters C_β and C_γ respectively related to quadrupole deformations β₂ and γ are determined from the deformation energy curves, which are consistent with the observed low-lying β and/or γ bands. The stiffness evolution under rotation along the yrast line is briefly discussed, e.g., on the basis of the centipidelike E-GOS curves, showing an unnegligible vibration effect.

Possible Properties on Nuclear Shape and Stiffness Evolution:A Systematic Analysis Based on Nuclear-Energy-Surface Calculations

1. School of Physics and Engineering, Zhengzhou University, Zhengzhou 450001, China;

2. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China

Funds: National Natural Science Foundation of China(11675148); Outstanding Young Talent Research Fund of Zhengzhou University (1521317002); Physics Research and Development Program of Zhengzhou University (32410017); Foundation and Advanced Technology Research Program of Henan Province (162300410222)

Corresponding author: 10.11804/NuclPhysRev.34.03.481

Received Date: 2016-10-30

Rev Recd Date: 2017-04-19

Publish Date: 2017-07-18

Key words:

Abstract: Nuclear shape and stiffness evolutions in even-even nuclei with 50 < Z < 82 are systematically analyzed in terms of the pairing-deformation self-consistent nuclear-energy-surface calculation in (β₂,γ,β₄) deformation space. Calculated equilibrium deformations are presented and compared with other theoretical predictions and available experimental data. The stiffness parameters C_β and C_γ respectively related to quadrupole deformations β₂ and γ are determined from the deformation energy curves, which are consistent with the observed low-lying β and/or γ bands. The stiffness evolution under rotation along the yrast line is briefly discussed, e.g., on the basis of the centipidelike E-GOS curves, showing an unnegligible vibration effect.

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Reference (40)

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Possible Properties on Nuclear Shape and Stiffness Evolution:A Systematic Analysis Based on Nuclear-Energy-Surface Calculations

doi: 10.11804/NuclPhysRev.34.03.481

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