Fission channels of 304120

The main fission modes of the double magic 304120 are investigated from both a static and dynamic point of view. A set of spin-orbit and l2 strength parameters is selected such that a minimum occurs in the shell correction energy at Z = 120 and N = 184. The mass asymmetry is settled around the two double magic fragments: 132Sn and 208Pb. Different fission modes (some isotopes of Cd+Hf, Sn+Yb, Te+Er, Hg+Zr, Pb+Sr and Po+Kr) are analysed both staticly and dynamically. The macroscopic-microscopic method was used to calculate the potential energy in a three-dimensional space of deformation. Fission trajectories are obtained by minimization of the action integral. Penetrabilities and lifetimes are computed within the semiclassical WKB method. The most probable fission modes of 304120 correspond to the split in which 128Cd or the double magic 132Sn is the light fragment. Fission at larger mass asymmetry is less probable. (author)