Determination of $\alpha$-decay energies in the heavy element region

Since the discovery of $\alpha$-decay, one of the main decay channels of unstable atomic nuclei, its intensive study has not ceased. These studies are especially relevant in the field of superheavy elements, since observation of the corresponding chain of $\alpha$-decays is necessary for the identification of new isotopes. Methods using mass ratios have long been successfully used to predict the masses of unknown nuclei. The efficiency of the method based on the residual np-interaction coefficient was previously demonstrated on the characteristics of $\alpha$-decay for isotopes with Z ≤ 106. In this paper, the results for nuclei up to Z = 118 are presented, obtained on the basis of experimental values of $Q_\alpha$. Estimates of energy and $alpha$-decay rates obtained from AME2020 and NUBASE2020 data are in good agreement with the 2022–2024 experimental data.