Considering fission dynamics at low energy, shell and pairing effects can play a crucial role giving rise in particular to multimodal fission. To follow the evolution of the compound nucleus along its path to fission we solve a 2-dimensional Langevin equation taking explicitly particle evaporation into account. The fragment mass distribution and neutron pre-scission multiplicity obtained in a fusion-fission experiment performed in parallel are compared to the predictions leading to an improved theoretical description.

PACS numbers: 21.10.Gv, 24.60.Dr, 25.85.--w, 29.40.Mc