Role of pairing degrees of freedom and higher multipolarity deformations in spontaneous fission process Original Research Article

Spontaneous fission (Tsf) and alpha-decay half-lives (Tα) of the heaviest nuclei with atomic number 100 ≤ Z ≤ 114 are calculated on the basis of the deformed Woods-Saxon potential. The calculations of (Tsf) are performed by the WKB approximation, in the multi-dimensional dynamical-programing method (MDP). We have examined three different effects: the effect of higher even-multipolarity shape parameters (β6 and β8), the role of reflection-asymmetry (β3 and β5) and the influence of pairing degrees of freedom (Δp and Δn). Alpha-decay half-lives (Tα) have been calculated by the Viola-Seaborg (V-S) formula with the parameters modified to the latest experimental data.