Kinetic and excitation energies of fission fragments

The kinetic energies of fission fragments are calculated for four nuclei taking into account shell effects with various mass ratios of the fragments. It is shown that the kinetic-energy minimum corresponds to symmetric fission. A dependence of the kinetic energy on A and Z of the fissioning nucleus is found which agrees satisfactorily with the experimental data. The excitation energy is also calculated for threshold and spontaneous fission of these nuclei allowing for the kinetic energy of the fission degrees of freedom of the fissioning nucleus. The calculations agree with experiment. (AIP)