The single-comparator method in thermal neutron activation analysis extended for some (n,p) reactions

From experimental studies of the rate of the reactions 47Ti(n,p)47Sc, 48Ti(n,p)48Sc and 58Ni(n,p)58Co in four nuclear reactors, it is concluded that for the irradiation positions of the light water moderated reactors BR2 (Mol, Belgium) and HFR (Petten, Netherlands) a simple empirical relation exists between the fast neutron flux on the one hand and the thermal and epithermal neutron flux on the other. The graphite moderated reactor BR1 (Mol, Belgium) and the heavy water reactor FRJ2 (Juelich, F.R. of Germany), however, have relatively much lower fast fluxes and their irradiation facilities do not obey the empirical relation determined. (author) 5 refs.; 3 figs.; 3 tabs