Asymmetric fission for 70,76Se and 90,94,98Mo via quasimolecular shapes and related formulas Original Research Article

The asymmetric fission has been described within quasimolecular shapes and a generalized liquid-drop model including the nuclear proximity energy. The fission barrier heights agree with the recent data obtained for 70,76Se and 90,94,98Mo. An analytical formula given the temperature-dependent fission barrier height as functions of the charges and masses of the parent nucleus and of one fragment is proposed. Another expression allows to obtain for a fixed fragment charge the associated most probable mass.