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

• Received 18 May 1959

DOI:https://doi.org/10.1103/PhysRev.116.426