Simultaneous Two‐Proton Emission Process of Neutron Deficient Nuclei

In a previous work [1], we have calculated the one‐proton emission rate of nuclei near the proton drip line, by using an analytical barrier parametrization. The calculation is based on the WKB‐approximation and half‐lives are obtained in good agreement with the existing experimental data for one‐proton emitters. Motivated by these results, in present work, we have eliminated the artificial barrier parametrization previously used, constructing a realistic barrier composed by the superposition of a nuclear Wood‐Saxon potential form plus the coulomb and centrifugal barrier. The purpose here is to see if the simple WKB‐calculation is still able to reproduce recent observed experimental results for two‐proton emission from 45Fe. This decay mode has been observed by Miernik et al. [2], reporting the proton energy distribution and half‐life energy dependence for 45Fe simultaneous 2p‐emission. For theoretical determination of the half‐life and these energy distributions we evoked a statistical assumption of a pio...