Determination of Differential Elastic and Double-differential Neutron Scattering Cross Sections of Elemental Copper at Energies between 6.95 MeV and 14.18 MeV

摘要

Differential cross sections of elastic and inelastic neutron scattering an elemental copper were determined in the energy range from 6.95 MeV to 14.18 MeV at eight incident energies. The data were derived 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 copper 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.