Nuclear structure of superheavy elements from alpha decay and fission data

Abstract

This paper brings together the most important aspects of nuclear structure and reaction dynamics that may have an influence on stability of superheavy nuclei. These aspects form the basis of current experimental research on heaviest elements to investigate their basic properties. The shell model is used to estimate microscopically the alpha formation amplitude from single quasiparticle states under the influence of the pairing interaction. Half-life calculations for fission are performed in a dynamical approach defined by the shape and the high of fission barrier, the fissility and nuclear deformations. Reaction energies QS F are estimated within the liquid drop model. We predicted with the most probable total half-lives for many unknown nuclides at which there are no experimental data. The rms values for experimental and theoretical half-lives are evaluated and discussed. The comparison of theoretical calculations with experimental data allows us to draw conclusions on the role of the nuclear structure and shell effects in low-energy decay processes.