Theoretical Analysis and New Formulae for Half-Lives of Proton Emission

The proton radioactivity half-lives of spherical proton emitters are calculated by the cluster model with the contribution of a centrifugal potential barrier considered separately. The results are compared with the experimental data and other theoretical data, and good agreement is found for most nuclei. In addition, two formulae are proposed for the proton decay half-life of spherical proton emitters through the least squares fit to the experimental data available, and could reproduce the experimental half-lives successfully.National Natural Science Foundation of China 10775061 Fundamental Research Fund for Physics and Mathematics of Lanzhou University LZULL200805 Chinese Academy of Sciences KJCX- SYW- N02 National Basic Research Program of China 2007CB81500