Author:
Wei Xiao-Yang,Wang Hua-Lei,Zhang Zhen-Zhen,Liu Min-Liang
Abstract
Abstract
Based on the potential-energy-surface calculation, the impact of different deformation degrees of freedom on a single-particle structure and binding energies in nuclei around 152Nd, located on one of the hexadecapole-deformation islands, is analyzed in a multi-dimensional deformation space. Various energy maps, curves and tables are presented to indicate nuclear properties. The calculated equilibrium deformations and binding energies with different potential parameters are compared with experimental data and other theories. It is found that the inclusion of the hexadecapole deformations, especially the axial one, can improve the theoretical description of both nuclear shapes and masses. In addition, our calculated potential-energy curve shows that a critical deformation-point, β
2 ≈ 0.4, exists—the triaxial (hexadecapole) deformation effect can be neglectable but the hexadecapole (triaxial) one plays an important role before (after) such a critical point.
Funder
National Natural Science Foundation of China
Reference69 articles.
1. Mass measurements of neutron-deficient yb isotopes and nuclear structure at the extreme proton-rich side of the N = 82 shell;Beck;Phys. Rev. Lett.,2021
2. Evidence of hexadecapole deformation in uranium-238 at the relativistic heavy ion collider;Ryssens;Phys. Rev. Lett.,2023
3. The AME2020 atomic mass evaluation (II). Tables, graphs and references;Wang;Chin. Phys. C,2021
4. Shapes of deformed nuclei as determined by electron scattering: 152Sm, 154Sm, 166Er, 176Yb, 232Th, and 238U;Cooper;Phys. Rev. C,1976
5. Proton elastic scattering on light nuclei. II. Nuclear structure effects;Fabrici;Phys. Rev. C,1980