Abstract
Intranuclear cascade model calculations are carried out on the recent measurements (WA80 Collaborations) for the multiplicity, energy and angular distributions of singly charged target fragments of energy in the range 30 < E < 400 MeV (the so-called grey particles) produced in proton-nucleus interactions at 200 GeV/c. It is shown that these distributions are reasonably well understood in terms of the intranuclear cascade model which considers that grey particles are only produced in the first two generations of the cascade. The obtained distributions, mean values and target mass dependence are more consistent with the experimental data than other models using Monte Carlo Simulations.