Continuum spectrum in the quasifree (p, 2p) scattering

It is assumed that the rescattering of the quasifree particles on the spectator part of the target nucleus constitutes the major source of the pre-equilibrium events situated beyond the fourbody kinematic limit in the reaction phase space. A preliminary analysis suggests that the preequilibrium spectrum can be calculated in terms of the inelastic scattering of the quasifree particles on the spectator nucleus. Comparison with the ${}_{}{}^{58}{}_{}{}^{}\mathrm{Ni}(p, 2p){}_{}{}^{57}{}_{}{}^{}\mathrm{Co}$ data at $E_0=198\mathrm{}$ MeV supports the model prediction.