Proton spectra from 800 MeV protons on selected nuclides

The emission of protons from targets of 6Li, Li, 12C, 27Al, 40Ca, 51V, 90Zr, and Pb under bombardment from 800 MeV protons has been studied using a high resolution proton spectrometer. Spectra were measured at laboratory scattering angles of 50, 70, 90, 110, 130, 150, 200, 250, and 300 with special emphasis on the quasifree region. Outgoing momenta corresponding to the region of pion production were examined at 110 and 150. Absolute cross sections have been derived by reference to known ( p,p) scattering data at 800 MeV. The quasifree scattering has been compared to a distorted-wave impulse approximation analysis by summing over the unobserved (struck) nucleon. The systematics of proton production and the applicability of the distorted-wave impulse approximation analyses are discussed