Systematic study of two-proton radioactivity half-lives using the two-potential and Skyrme-Hartree-Fock approaches *

Abstract

Abstract In this work, we systematically study the two-proton ( ) radioactivity half-lives using the two-potential approach, and the nuclear potential is obtained using the Skyrme-Hartree-Fock approach and the Skyrme effective interaction of SLy8. For true radioactivity ( 0 and 0, where and are the released energies of the one-proton and two-proton radioactivity, respectively), the standard deviation between the experimental half-lives and our theoretical calculations is 0.701. In addition, we extend this model to predict the half-lives of 15 possible radioactivity candidates with 0 obtained from the evaluated atomic mass table AME2016. The calculated results indicate a clear linear relationship between the logarithmic radioactivity half-lives ( ) and coulomb parameters [( + ) ] considering the effect of orbital angular momentum proposed by Liu [Chin. Phys. C 45, 024108 (2021)]. For comparison, the generalized liquid drop model (GLDM), effective liquid drop model (ELDM), and Gamow-like model are also used. Our predicted results are consistent with those obtained using other relevant models.