A study of the n-p final state interaction in the 2H(α, pα)n reaction at 18 MeV

Abstract

Absolute cross sections of the 2H(α, pα)n reaction have been measured at an incident energy and angle suitable for observing the effects of the n-p final state interaction (n-p FSI). The data are analysed by a semi-phenomenological modified impulse approximation (MIA). In the energy range E np ⪅ 0.6 MeV, destructive interference is clearly seen between the MIA matrix elements and n-p FSI.