Preequilibrium model analysis of (p,n) reactions on nuclei in the Cr-Ni region

Abstract
The energy spectra of neutrons emitted from 25 MeV (p,n) reactions on nuclei in the Cr-Ni region have been analyzed in terms of the preequilibrium exciton model introducing effective Q values, the pairing correlation, and the modified uniform spacing model in which the uniform spacing model is modified so as to have a wide spacing at the magic number. The calculated energy spectra using the above model are in fairly good agreement with the observed spectra with pronounced structures.