Excitation Functions of the (p, pn) and (p, 2p) Reactions onCe142at 60-233 Mev

The cross sections of the reactions ${\mathrm{Ce}}^{142}(p, pn){\mathrm{Ce}}^{141}$ and ${\mathrm{Ce}}^{142}(p, 2p){\mathrm{La}}^{141}$ have been determined for protons of 60, 120, 180, 200, and 233 Mev energy. A comparison is made of the observed yields with those predicted on the basis of Monte Carlo cascade-evaporation calculations at 83, 238, and 368 Mev. For protons of energy between 60 and 240 Mev the agreement is good for the ($p, \mathrm{pn}$) reaction and fair for the ($p, 2p$).