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Abstract
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The evaporation residue cross section, the anisotropy of the fission fragments angular distribution, the fission
probability, the mass-energy distribution of the fission fragments, and the average prescission neutron multiplicity
have been calculated for the compound nucleus 210Rn by using four-dimensional Langevin equations with
dissipation generated through the chaos-weighted wall and window friction formula. Three collective shape
coordinates plus the projection of the total spin of the compound nucleus to the symmetry axis K were considered
in the four-dimensional dynamical model. In the dynamical calculations dissipation coefficient of K, ?k was
considered as a free parameter, and its magnitude was inferred by fitting measured data on the evaporation
residue cross section and the anisotropy of the fission fragments angular distribution for the compound nucleus
210Rn. It was shown that the results of the calculations are in good agreement with the experimental data by
using values of the dissipation coefficient of K, equal to ?k = (0.185?0.200) (MeV zs)?1/2. It also was shown
that the influence of the dissipation coefficient of K on the results of the calculations of the fission probability,
the mass-energy distribution of the fission fragments, and the average prescission neutron multiplicity for the
compound nucleus 210Rn is small.
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