In order to describe heavy-ion fusion reactions around the Coulomb barrier with an actinide target nucleus, we propose a model which combines the coupled-channels approach and a fluctuation-dissipation model for dynamical calculations. This model takes into account couplings to the collective states of the interacting nuclei in the penetration of the Coulomb barrier and the subsequent dynamical evolution of a nuclear shape from the contact configuration. In the fluctuation-dissipation model with a Langevin equation, the effect of nuclear orientation at the initial impact on the prolately deformed target nucleus is considered. Fusion-fission, quasi-fission and deep quasi-fission are separated as different Langevin trajectories on the potential energy surface. Using this model, we analyze the experimental data for the mass distribution of fission fragments (MDFF) in the reaction of 36S+ 238U at several incident energies around the Coulomb barrier.
|Journal||EPJ Web of Conferences|
|Publication status||Published - 2012|
|Event||1st Heavy Ion Accelerator Symposium on Fundamental and Applied Science, HIAS 2012 - Canberra, ACT, Australia|
Duration: 2012 Apr 11 → 2012 Apr 13
ASJC Scopus subject areas
- Physics and Astronomy(all)