α spectra of deformed even–even nuclei and equivalence of optical model potentials

Abstract

The reduced transition probabilities of the α spectra of some deformed heavy even–even nuclei are calculated, taking the barrier to be the anisotropic electrostatic potential superposed by the deformed nonlocal α-nucleus potential. The latter is described by a deformation parameter, εl, as in our previous treatments and, for its static part, different optical model potentials are now used. Results show that the calculated values of the reduced transition probabilities are in good agreement with the observed values, taking the best-fit values of εl. It is also found, as in the case of spherical nuclei, that the different optical potentials are equivalent for the cases considered, and that the nonlocal effect is predominant.