Stability of Superheavy Elements in Skyrme HFB Approach

Abstract

Half-lives of superheavy elements (SH) with 108 ≤ Z ≤ 126 and 148 ≤ N ≤ 188 are calculated from decay energies, fission barriers and the mass parameters that have been obtained in a uniform microscopic way within a selfconsistent Hartree-Fock-Bogoliubov (HFB) method, SkM * force in the particle-hole channel and the density dependent delta interaction in the particle-particle channel. We consider α-decay, spontaneous fission (SF) and β processes (β ± and electron capture). The results indicate that the longest total half-lives are of the order of seconds for a set of nuclei in the vicinity of Z = 112, N = 182.