Possible explanation of fine structures in mass-energy distribution of fission fragments
Joint Institute for Nuclear Research, 141980, Dubna, Russia
2 Institute of Nuclear Physics, 702132, Tashkent, Uzbekistan
3 Institut für Theoretische Physik der Justus-Liebig-Universität, D-35392, Giessen, Germany
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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.
© Società Italiana di Fisica and Springer-Verlag, 2004