Calculations on decay rates of various proton emissions

  • Yibin QianEmail author
  • Zhongzhou Ren
Regular Article - Theoretical Physics


Proton radioactivity of neutron-deficient nuclei around the dripline has been systematically studied within the deformed density-dependent model. The crucial proton-nucleus potential is constructed via the single-folding integral of the density distribution of daughter nuclei and the effective M3Y nucleon-nucleon interaction or the proton-proton Coulomb interaction. After the decay width is obtained by the modified two-potential approach, the final decay half-lives can be achieved by involving the spectroscopic factors from the relativistic mean-field (RMF) theory combined with the BCS method. Moreover, a simple formula along with only one adjusted parameter is tentatively proposed to evaluate the half-lives of proton emitters, where the introduction of nuclear deformation is somewhat discussed as well. It is found that the calculated results are in satisfactory agreement with the experimental values and consistent with other theoretical studies, indicating that the present approach can be applied to the case of proton emission. Predictions on half-lives are made for possible proton emitters, which may be useful for future experiments.


Decay Width Daughter Nucleus Decay Energy Spectroscopic Factor Parent Nucleus 
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Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Department of Applied PhysicsNanjing University of Science and TechnologyNanjingChina
  2. 2.Department of Physics and Key Laboratory of Modern AcousticsNanjing UniversityNanjingChina
  3. 3.Kavli Institute for Theoretical Physics ChinaBeijingChina
  4. 4.Center of Theoretical Nuclear PhysicsNational Laboratory of Heavy-Ion AcceleratorLanzouChina

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