Abstract
The evaporation formalism of the compound-statistical theory of nuclear reactions is presented in a form containing the explicit dependence of the emission probability on angular momentum and suitable for computation of excitation functions by the Monte Carlo technique. The dependence of the nuclear level density on angular momentum is discussed, and an improved expression is offered. Monte Carlo calculations have led to the evaluation of excitation functions in selected reactions and the results were compared with experiment. The effect of competing de-excitation by gamma-ray emission is examined and its magnitude is estimated from an analysis of excitation function data. Satisfactory agreement between calculated and experimental excitation functions induced by 4He ions of kinetic energy up to 40 MeV is obtained using the Fermi gas model parameters for the level density expression.
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