Abstract

Recent studies of (n, xp) spectra at incident energies of 28 to 63 MeV have emphasized a previously noted trend that exciton model calculations do not extend to high enough emission energies in some (p, xn) and (n, xp) reactions. Improved agreement between experiment and calculation is achieved by including in the residual nucleus state density those configurations that can be populated but were not being counted because the Fermi level moves down during particle emission. This necessitates minor adjustments in other model parameters. The situation is generalized to reactions with complex particle channels, and significant effects are seen in the calculations for a few reactions on light targets, though the average level of agreement with experiment is unchanged from earlier work.

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