Reaction Mechanism in Direct Interaction Inelastic Scattering

It is pointed out that experimental results indicate very striking similarities between (p, p^') and (d, d^') reactions, and very striking differences between (p, p^') and ($p, n$) reactions. It is shown that this is in strong disagreement with the nucleon-nucleon collision model commonly used in interpreting (p, p^') reactions, but in agreement with the recent inelastic diffraction scattering model of Blair.