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α-Decay half-life screened by electrons


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.

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Corresponding author

Correspondence to Niu Wan.

Additional information

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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Wan, N., Xu, C. & Ren, ZZ. α-Decay half-life screened by electrons. NUCL SCI TECH 27, 149 (2016).

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  • Electron screening effect
  • α-Decay half-life
  • Density-dependent cluster model