Proton Emission from Neutron Deficient Nuclei

We calculate the one‐proton emission rate of nuclei near the proton drip line based on the WKB‐approximation to determine Gamow’s penetrability factor. An analytical potential barrier parametrization is proposed, and the obtained results in the calculation are in good agreement with existing experimental data for one‐proton emitters. In addition, the sum‐energy distribution for two‐proton emission from 45Fe is also determined. This decay mode has been observed by Miernik et al. [Phys. Rev. Lett. 99, 192501 (2007)], where the measured two‐proton energy distribution for simultaneous emission has been also reported. We show that this energy distribution is well reproduced with the statistical assumption of two‐proton emission being described by a product of the calculated individual one‐proton emission rates.