Energy dissipation process for 100-MeV protons and the nucleon-nucleon interactions in nuclei

Coincidence studies of two protons emitted from p+/sup 58/Ni at 100 MeV have been carried out. The proton spectra in coincidence with scattered protons suffering an average energy loss of 60 MeV are similar to those resulting from 60-MeV incident protons. This suggests that the initial interaction of the incident proton is with a bound nucleon and that one or both of these nucleons are emitted or initiates a cascade leading to more complex states.