Preequilibrium Emission of Protons from ⁹³Nb(n,p) Reaction at 14 MeV

The energy spectrum and angular distributions of protons emitted from the ⁹³Nb(n,p) reaction have been measured at a bombarding energy of 14.1 MeV with a position-sensitive counter-telescope. The energy spectrum is well explained by the sum of the spectra calculated on the basis of the preequilibrium and statistical evaporation models. The angular distributions are successfully reproduced by means of the generalized exciton model. The multistep direct reaction model indicates a little discrepancy in the absolute cross section in spite of general agreement in the shape of the angular distributions.