The angular variations of the $\mathrm{D}\mathrm{}(p,pn)p$ and $\mathrm{D}\mathrm{}(p,pp)n$ quasielastic scattering processes at $E_{\mathrm{inc}}=22.8\mathrm{}$ MeV are investigated. It is shown that the $\mathrm{D}\mathrm{}(p,pn)p$ data are incompatible with the simple impulse approximation and with models which include final-state interaction corrections to the simple impulse approximation. The behavior of the ratio of the $\mathrm{D}\mathrm{}(p,pn)p$ and $\mathrm{D}\mathrm{}(p,pp)n$ cross sections as a function of angle cannot be explained in terms of any simple model.

• Received 7 October 1971

DOI:https://doi.org/10.1103/PhysRevLett.27.1454