2015/08/31 by Bharat Kumar, S. K. Biswal, S. K. Singh +1 · 1 citation
Physics and Astronomy · #nucl-th
paper · pdf · doi:10.1103/physrevc.92.054314
11 Pages, 8 figures, Accepted in Phys. Rev. C
arxiv created 2015/11/02 · arxiv updated 2015/12/09
The properties of recently predicted thermally fissile Th and U isotopes are studied within the framework of relativistic mean field (RMF) approach using axially deformed basis. We calculated the ground, first intrinsic excited state and matter density for highly neutron-rich thorium and uranium isotopes. The possible modes of decay like α-decay and β-decay are analyzed. We found that the neutron-rich isotopes are stable against α-decay, however they are very much unstable against β-decay. The life time of these nuclei predicted to be tens of second against β-decay. If these nuclei utilize before their decay time, a lots of energy can be produced within the help of multi-fragmentation fission. Also, these nuclei have a great implication in astrophysical point of view. The total nucleonic densities distribution are calculated, from which the clusters inside the parent nuclei are determined. %Most of the thorium isotopes are α emitters, where as some %of them have short half-lives. In some cases, we found the isomeric states with energy range from 2 to 3 MeV and three minima in the potential energy surface of 228-230Th and 228-234U isotopes.