Multi-dimensional Langevin approach to the fusion of massive nuclei

We have investigated the fusion-fission process of massive nuclei using the multi-dimensional Langevin equation and the statistical model. The compound nucleus formation probability has been obtained as a function of extra energy above incident barrier. The excitation function of evaporation residue cross section for three systems; 100Mo+100Mo, 100Mo+110Pd, and 110Pd+110Pd, were calculated using the survival probability against fission obtained with the statistical model and were compared with experimental data. Our results reproduce the phenomenon of fusion hindrance for the fusion reactions of massive nuclei in the case of nearly symmetric projectile-target combinations