Half-life of sphericalαemitters and intrinsic properties of nuclei

Abstract

The quantum mechanical effects are investigated on the half-life of α decay. To this aim the penetration probability in α decay of spherical isotopes of 146 Sm, 148 Sm, 148 Gd, and 224 Ra is calculated by employing coupled channel formalism by considering the effects of surface vibrations in the daughter nucleus; the obtained results are compared with those calculated by the semiclassical WKB approximation using two versions of the proximity potential. It is shown that by including low-lying excitation states the results are modified, in better agreement with experimental data.

Comparative study of the alpha decay of Hg isotopes using different forms of nuclear potentials

“…This was well supported by the previous studies of Santhosh et al [24,77]. Also, including the vibrational modes increases the value of penetration probability due to the reduction of the potential barrier, and accordingly the half-life is decreased [78]. Thus, it is worth pointing that the deformation and vibrational states tend to decrease the alpha decay half-lives and hence the study of effect of deformation and vibrational states is quite important in the calculation of the half-life of the decay process.…”