It is shown that the ratio o f the cross sections o f quasifree (p ,Zp) and (p ,pn) reactions in complex nuclei for identical and suitable geometries can be reliably calculated in the distorted wave impulse approximation. A comparison with preliminary experimental results supports the validity of the impulse approximation for the medi um energy scattering of nucleons.
Physical Review. C, Nuclear physics. Woodbury. Vol. 20, n. 2 (Aug. 1979), p. 446-458