Potential in mass asymmetry and quasifission in a dinuclear system

Abstract Within the two-center shell model the potential energy of dinuclear system as a function of mass asymmetry is studied and compared with other microscopical and phenomenological driving potentials. The strong influence of the shell structure and the deformation of the dinuclear system nuclei on the evolution of system is shown. The dependence of the energy threshold for complete fusion in mass asymmetry on the isotope composition of colliding nuclei is analysed and compared with the available experimental data. The quasifission is considered as the decay of the dinuclear system. A correlation between minima of the driving potential and the peaks of the mass distribution of quasifission products is observed.