Within the generalized liquid drop model (GLDM), the effects of the Strutinsky shell correction on ${\alpha }_{}$ decay processes have been systematically studied. Before the scission point, the shell correction energy $E_{\mathrm{sh}}$, which brings noticeable change to potential barriers for most nuclei, varies with nuclear deformation described by quasimolecular shapes (QMSs). To investigate the subsequent influence on ${\alpha }_{}$ decay, we performed systematic calculations involving more than 400 favored ground-to-ground ${\alpha }_{}$ emissions with atomic number $Z$ = 52 to 118. We found that the shell correction remarkably reduces the notorious deviation between theoretical and experimental half-lives around the neutron shell closure $N=126$. It will also shed new light on predicting $\alpha$-decay half-life of superheavy nuclei.

• Received 6 May 2020
• Revised 30 June 2020
• Accepted 17 August 2020

DOI:https://doi.org/10.1103/PhysRevC.102.044308