Nonmonoenergety of neutron source based on the solid tritium target

The spectra of the neutrons produced through the bombardment of tritium-titanium-molybdenum target by protons with energies 4 to 9 MeV have been measured by time-of-flight technique at different angles. It was found that, besides the T(p, n) neutrons, there are low energy neutrons, which contribute 4 to 3000% compare to the main monoenergetic neutrons. Besides on the way to the detector the part of the T(p, n) neutrons inelastically scatters on the detector shielding (collimator). The corresponding calculations made with Monte-Carlo and Hauser-Feshbach codes quantitatively reproduced the spectra observed in the experiment. The approach tested in the present work could be used for estimation of the non-monoenergetic neutrons contribution for other neutron producing reactions and target assemblies