NUCLEAR-LEVEL DENSITY AND CASCADE-EMISSION CROSS-SECTIONS FROM THE ANALYSIS OF NEUTRON-SPECTRA IN THE REACTIONS (ALPHA,XN) ON THE IN-115 AND SN-122 NUCLEI

The results of measurements and analysis of the differential cross sec tions for neutron emission in the reactions In-115(alpha, xn) and Sn-1 22(alpha, xn) at alpha-particle energies of 26.8 and 45.2 MeV are pres ented. Data on equilibrium emission are interpreted in the statistical model based on the Hauser-Feshbach formalism for multicascade process es. As a result, the parameters of the nuclear-level density in the ba ck-shifted Fermi-gas model are determined over a wide range of excitat ion energies and cross sections for neutron emission at various stages of the evaporation process.