Cross Sections of Gamma-Proton Reactions

Using the University of Pennsylvania betatron, the energy dependences of the γ-p cross sections of C, Al, Co, Ni, and Cb have been measured. The cross-section curves exhibit the resonance character found in γ-n reactions. The significant parameters of each of the curves are tabulated. From the data of this paper and the known γ-n cross-section data, the sum of neutron and proton integrated cross sections is evaluated for carbon and nickel.