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 ›› 2016, Vol. 27 ›› Issue (6): 149 doi: 10.1007/s41365-016-0150-2

Special Issue: Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2016)

• Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2016) • Previous Articles     Next Articles

α-Decay half-life screened by electrons

Niu Wan 1, Chang Xu 1, Zhong-Zhou Ren1,2   

  1. 1 Department of Physics, Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093, China
    2 Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator, Lanzhou 730000, China
  • Contact: Niu Wan
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (Nos. 11175085, 11235001, 11375086, and 11120101005), by the 973 Program of China (No. 2013CB834400), by the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and by the Open Project Program of the State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China (No. Y5KF141CJ1).

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Niu Wan, Chang Xu, Zhong-Zhou Ren. α-Decay half-life screened by electrons.Nuclear Science and Techniques, 2016, 27(6): 149     doi: 10.1007/s41365-016-0150-2


In this paper, by considering the electrons in different external environments, including neutral atoms, a metal, and an extremely strong magnetic-field environment, the screened α-decay half-lives of the α emitters with proton number Z = 52–105 are systematically calculated. In the external environment, the decay energy and the interaction potential between α particle and daughter nucleus are both changed due to the electron screening effect and their variations are both very important for the electron screening effect. Besides, the electron screening effect is found to be closely related to the decay energy and its proton number.

Key words: Electron screening effect, α-Decay half-life, Density-dependent cluster model