α-decay half-lives for even-even isotopes of W to U

Abstract

We investigate α-decay half-lives for 74 ≤ Z ≤ 92 even-even nuclei within the semiclassical WKB approximation in deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc). The α-particle preformation factors are estimated from cluster-formation model using both empirical AME2020 binding energies and numerical ones obtained by a deep neural network (DNN) study in which the available DRHBc binding energies are used as training set. We find that our estimated α-decay half-lives are qualitatively in agreement with experimental results. We also compare our results with the empirical formulas, ZZCW and UNIV. Based on these observation, we extend our predictions of α-decay half-lives for the isotopes whose experimental data are not available. © 2024 American Physical Society.