Alpha- Cluster- and Fission Decay of Superheavy Nuclei

摘要

Our analytical superasymmetric fission (ASAF) model is used to calculate the cluster decay and α decay half-lives of superheavy nuclei with released energies ob- tained from the experimental and calculated atomic mass tables. Lower values of rms standard deviations of calculated half-lives compared to experimental ones for α emit- ters are produced by the semiempirical (semFIS) formula. The nuclear dynamics based on potential barriers computed by the macroscopic-microscopic method should be im- proved in the future by replacing the Werner-Wheeler nuclear inertia by the cranking inertia tensor. Up to now spontaneous fission half-lives of the heaviest superheavy nu- clei have been estimated only for neutrondeficient nuclei