Search of islands of stability for hypothetical superheavy nuclei using covariant density functional theory

Abstract

Abstract:A systematic search for the location of islands of stability has been performed for the proton number 100 ≤ Z ≤ 220 and the neutron number Z + 30 ≤ N ≤ 2Z + 30 using covariant density functional theory (CDFT), a relativistic Hartree-Bogoliubov (RHB) formalism with separable pairing, for two different force parameters, DD-ME2 and NL3*. Locations of the islands of stability are identified by analysis of the two-neutron and two-proton separation energy, two-nucleon shell gaps, vanishing neutron and proton pairing gap, energy surface, and the single particle states.The results show that beyond 292 120 only Z = 154 and N > 220 can be a center of a new island of stability.