The Role of the Quasifission Process in Reactions for the Synthesis of Superheavy Elements

We analyze the effect of entrance channels having very different mass asymmetries on the quasifission process in competition with the fusion, and on the fissility of the compound nucleus in competition with the evaporation residue production. According to the dinuclear system (DNS) concept in reactions with massive nuclei, we estimate the capture and fusion cross sections. Using the calculated partial fusion cross section and the advanced statistical model, we also estimate the evaporation residue cross sections for the superheavy nucleus formation.