Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2018, Vol. 29 ›› Issue (3): 38 doi: 10.1007/s41365-018-0381-5

• NUCLEAR PHYSICS AND INTERDISCIPLINARY RESEARCH • Previous Articles     Next Articles

Possible observation of shape-coexisting configurations in even-even midshell isotones with N = 104: A systematic total Routhian surface calculation

Qing-Zhen Chai 1, Wei-Juan Zhao 1, Hua-Lei Wang 1, Min-Liang Liu 2   

  1. 1 School of Physics and Engineering, Zhengzhou University, Zhengzhou 450001, China
    2 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
  • Contact: Hua-Lei Wang E-mail:wanghualei@zzu.edu.cn
  • Supported by:

    This work was supported by the Natural Science Foundation of China (Nos. 11675148 and 11505157), the Project of Youth Backbone Teachers of Colleges and Universities of Henan Province (No. 2017GGJS008), the Foundation and Advanced Technology Research Program of Henan Province (No. 162300410222), the Outstanding Young Talent Research Fund of Zhengzhou University (No. 1521317002) and the Physics Research and Development Program of Zhengzhou University (No. 32410017).

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Qing-Zhen Chai, Wei-Juan Zhao, Hua-Lei Wang, Min-Liang Liu. Possible observation of shape-coexisting configurations in even-even midshell isotones with N = 104: A systematic total Routhian surface calculation.Nuclear Science and Techniques, 2018, 29(3): 38     doi: 10.1007/s41365-018-0381-5
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Abstract:

Systematic total Routhian surface calculations for even–even N = 104 midshell isotones with 66≤Z≤ 82 have been carried out based on a more realistic diffuse-surface deformed Woods–Saxon nuclear potential in (β2 ,γ , β4 ) deformation space, focusing on the rotation-induced shapecoexisting phenomena. As an example and basic test, the oblate property at the ground state in 184Hg is well reproduced and themicroscopic origin is analyzed fromthe single-particle structure. The present calculated results are compared with available experimental information, showing a good agreement. It is systematically found that in this isotonic chain several bands with different shapes (e.g., prolate, oblate and superdeformed prolate bands, seven non-collective band)may show a strong competition and coexisting phenomenon at a certain domain of the rotational frequency.

Key words: Total Routhian surface calculation, Woods– Saxon potential, Shape coexistence, Rotation, Midshell nuclei