Orientation effects of deformed nuclei on the production of superheavy elements

Within the dinuclear system model, the effects of the relative orientations of interacting deformed nuclei on the interaction potential energy surfaces, the evaporation residue cross sections of some cold fusion reactions leading to superheavy elements are investigated. The competition between fusion and quasifission is studied to show the effect of the orientation. It turns out that the belly-belly orientation is in favor of the production of superheavy nuclei, because in the case a barrier has suppressed the quasifission and thus helped fusion.

Natural Science Foundation of China 10505016 10775061 10475099 10435010 10705014 10575036 Chinese Academy of Sciences KJCX2-SW-N17 KJCX3-SYW-N02 DFG of Germany 2007CB815000