Possible explanation of fine structures in mass-energy distribution of fission fragments

Within an improved scission point model, experimental data on the relative yield, mean value and variance of the total kinetic-energy distribution of fission fragments are described. It is shown that for a fixed mass and charge fragmentation, the potential energy of the scission configuration has several minima as a function of the deformation parameters of the fragments. The scission at these minima leads to a relatively enhanced yield of the fragments with a certain TKE and creates fine structures in the TKE-mass distribution which are different from those produced by the odd-even effect.Received: 24 March 2004, Published online: 12 October 2004PACS: 24.75. + i General properties of fission - 21.60.Gx Cluster models