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Abstract
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The dynamics of fission has been studied by solving one- and three-dimensional Langevin equations
with dissipation generated through the chaos weighted wall and window friction formula. The average
prescission neutron multiplicities, fission probabilities and the mean fission times have been calculated in
a broad range of the excitation energy for compound nuclei 210Po and 224Th formed in the fusion-fission
reactions 4He + 206Pb, 16O+208Pb and results compared with the experimental data. The analysis of the
results shows that the average prescission neutron multiplicities, fission probabilities and the mean fission
times calculated by one- and three-dimensional Langevin equations are different from each other, and
also the results obtained based on three-dimensional Langevin equations are in better agreement with the
experimental data.
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