Recoil tritium reactions with molecular hydrogen. Part 2.—Moderation effects

Abstract

Moderation studies of the T + H₂ and T + D₂ systems moderated by helium, argon and krypton are reported. The derived kinetic parameters indicate that helium is a much poorer moderator in these systems than is either argon or krypton. This observation is rationalised by considering the effect of collisional dissociation of translationally excited product in the different moderators, and the effect of an α_He, which declines as the collision energy increases.