Fusion hindrance and roles of shell effects in superheavy mass region

Details Fusion hindrance and roles of shell effects in superheavy mass region Fusion hindrance and roles of shell effects in superheavy mass region

2006-09-18

arxiv.org/abs/nucl-th/0609049v1

Nucl.Phys. A780 (2006) 222-246

Physics

Nuclear Physics

Nuclear Theory

31 pages, 23 figures, Accepted for publication in Nuclear Physics A

Scientific paper

10.1016/j.nuclphysa.2006.09.018

We present the first attempt of systematically investigating the effects of shell correction energy for a dynamical process, which includes fusion, fusion-fission and quasi-fission processes. In the superheavy mass region, for the fusion process, shell correction energy plays a very important role and enhances the fusion probability when the colliding partner has a strong shell structure. By analyzing the trajectory in three-dimensional coordinate space with the Langevin equation, we reveal the mechanism of the enhancement of the fusion probability caused by `cold fusion valleys'. The temperature dependence of shell correction energy is considered.

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