Abstract
Abstract Spontaneous fission half-lives and fission barriers are calculated for the elements with 88 ≦ Z ≦ 108. The method is semi-empirical, based on the liquid drop model with modifications for the effects of nuclear structure. Spontaneous fission stability is predicted to decrease for nuclei just beyond the N = 152 neutron subshell, but should increase regularly for neutron numbers greater than 160. This effect should become quite strong as the N = 184 neutron subshell is approached, resulting in a number of experimentally observable isotopes in the mass region A ≈ 270−290. The results are discussed briefly with regard to problems of nucleo-synthesis as they pertain to the discovery of new isotopes and heavy element generation in stellar reactions.
Published Version
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