It has been observed that the decay rate for proton emission from [Formula Presented] single particle state is systematically quenched compared with the prediction of a one-dimensional potential model although the same model successfully accounts for measured decay rates from [Formula Presented] and [Formula Presented] states. We reconcile this discrepancy by solving coupled-channels equations, taking into account couplings between the proton motion and vibrational excitations of a daughter nucleus. We apply the formalism to proton emitting nuclei [Formula Presented] to show that there is a certain range of parameter set of the excitation energy and the dynamical deformation parameter for the quadrupole phonon excitation which reproduces simultaneously the experimental decay rates from the [Formula Presented] and [Formula Presented] states in these nuclei.
ASJC Scopus subject areas
- Nuclear and High Energy Physics