Alpha and cluster decays of superheavy elements and 2p radioactivity of medium nuclei

Abstract

The alpha decay, the cluster radioactivity and the heavy particle emission half-lives of known and some still unknown superheavy nuclei have been investigated within the original Generalized Liquid Drop Model and analytic formulas. The Q value has been calculated mainly from the recent NUBASE2020 tables. The agreement between the experimental data and the theoretical predictions of the alpha decay half-lives of the superheavy nuclei is correct and some predictions are provided for unknown nuclei. For some emissions of heavy particles by superheavy nuclei the half-life is comparable to the alpha decay half-lives or even smaller. The 76−80Zn, 78Ga, 72,74−76Cu, 69,71Ni and 47K nuclei seem to be the best probable candidates at an emission by superheavy nuclei, their daughter nuclei being the 205,206Hg, 206,207Tl, 208Pb, 209,210Bi, 211Po and 210At nuclei. The GLDM allows to reproduce roughly the very sparse data on 2p radioactivity.