Theoretical calculations of proton emission half-lives based on a deformed Gamow-like model

Abstract

In the present study, proton emission half-lives have been investigated for the deformed proton emitters with $53\le Z\le 83$ in the deformed Gamow-like model, where the deformation effect has been included in the Coulomb potential. The experimental half-lives of proton emitters can be reproduced within a factor of 3.45. For comparison, other results from the universal decay law and the new Geiger-Nuttall law are presented as well. Furthermore, the relevance of the half-lives to the angular momentum $l$ for ${}^{117}$La, ${}^{121}$Pr, ${}^{135}$Tb and ${}^{141}$Ho has been analyzed, and corresponding possible values of $l$ has been put forward: $l=$3, 3, 4, 4.