Determination of Differential Elastic and Inelastic and Double-differential Neutron Scattering Cross Sections of ~(93)Nb at Energies between 7.10 MeV and 14.10 MeV

摘要

Differential cross sections of elastic and inelastic neutron scattering an ~(93)Nb were determined in the energy range from 7.10 MeV to 14.10 MeV at eight incident energies. The data were denved by comparing the net time-of-flight spectra with calculated spectra using a realistic Monte Carlo simulation. The time-of-flight measurement was accompanied by extensive and careful calibrations. The niobium cross sections have been normalized to hydrogen scattering. The disturbing breakup scattering fraction of the non-monoenergetic DD neutron source can be subtracted after having been calculated by a Monte Carlo simulation. The data for such a calculation are checked and adjusted using an additional pure breakup neutron source based an the ~4He(d, np)~4He reaction.