Cross Sections for (n, p) and (n, ) Reactions with 14.5 MeV Neutrons

Abstract

Activation methods have been used to measure twenty-seven (n, p) and twenty-two (n, α) cross sections at 14.5 MeV for target nuclides in the mass range 100<A<250. Radiochemical separations were made in every case. The (n, p) cross sections fell gradually from 10 to 1 mbn over the mass range examined. No trend was apparent for the (n, α) cross sections measured, which were all of the order of 0.3 to 3.0 mbn. The (n, p) cross sections are in good agreement with the predictions of the direct interaction theory of Brown and Muirhead.