Configuration mixing in pre-equilibrium reactions

We present a unified semiclassical model of nucleon-induced pre-equilibrium reactions that permits the simulation of varying degrees of internal configuration mixing. We use it to compare the case of no configuration mixing with that of complete mixing. We also compare the two with an intermediate case that we call the natural model. The no-mixing and natural models yield very similar results, which are quite different from the complete-mixing ones. To reproduce standard exciton model spectra, the model simulations require complete mixing and an intraclass transition rate that is a thousand times larger than the natural one.