On the Stability of Superheavy Nuclei: https://arxiv.org/abs/2201.08268
Krzysztof Pomorski, Artur Dobrowolski, Bozena Nerlo-Pomorska, Michal Warda, Johann Bartel, Zhigang Xiao, Yongjing Chen, Lile Liu, Jun-Long Tian, Xinyue Diao
Potential energy surfaces of even-even superheavy nuclei are evaluated within the macroscopic-microscopic approximation. A very rapidly converging analytical Fourier-type shape parametrization is used to describe nuclear shapes throughout the periodic table, including those of fissioning nuclei. The Lublin Strasbourg Drop and another effective liquid-drop type mass formula are used to determine the macroscopic part of nuclear energy. The Yukawa-folded single-particle potential, the Strutinsky shell-correction method, and the BCS approximation for including pairing correlations are used to obtain microscopic energy corrections. The evaluated nuclear binding energies, fission-barrier heights, and Q-alpha energies show a relatively good agreement with the experimental data. A simple one-dimensional WKB model a la Swiatecki is used to estimate spontaneous fission lifetimes, while alpha-decay probabilities are obtained within a Gamow-type model.
Comments: 13 pages, 19 figures