Abstract
A Kramers-modified statistical model was applied to the study of the fission properties of the compound nucleus ^(168)Yb formed in heavy ion-induced fusion reactions in an intermediate range of excitation energies. The evaporation residue cross section, fission cross section, and the average pre-fission neutron multiplicities were calculated for ^(168)Yb formed in ^(18)O + ^(150)Sm reactions and the results compared with the experimental data. To calculate these quantities, the effects of temperature and the spin K about the symmetry axis have been considered in the calculations of the potential energy surfaces and the fission widths. It was shown that the results of the calculations are in good agreement with the experimental data by using values of the temperature coefficient of the effective potential and scaling factor of the fission-barrier height equal to k = 0.007 ± 0.002 MeV^(-2) and r_s = 0.994 ± 0.002, respectively.
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