Abstract
We complete the statistical framework for a theory of precompound reactions established in a recent paper relating to the multistep compound process, by considering here a statistical approach to multistep direct reactions. This approach applies when the number of open channels is sufficiently large, and the eigenfunctions of the residual nucleus are sufficiently complex, to call for a statistical treatment. We consider especially the one- and two-step processes in the sudden and the adiabatic approximation and investigate time scales to determine which approximation is the more reasonable one. We compare our results with those of other approaches.
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