Charge distribution in disintegration of uranium isotopes

Charge distributions of the fragments emitted from the disintegration of uranium isotopes U-235 and U-238 at various excitation energies up to 10 MeV per nucleon were investigated on the basis of a statistical approach. The calculations reproduce the fundamental properties of the fission at low excitation energies for E* <= 0.5 MeV/A. The variation of the average value of the maximal charge, < Z(max) >, of the emitted fragments with excitation energy is determined.