Yield curves for photo-proton emission from carbon and beryllium
The yields of photo-protons at laboratory angles of 40° and 70° from carbon irradiated with bremsstrahlung of end-point energies between 125 and 1000 MeV are given. From these data and a more limited set for beryllium, the shapes of the cross-sections for photo-proton emission by monochromatic photons are deduced.From a separate series of measurements on carbon at 70° lab with bremsstrahlung of end-point energies 380 and 420 MeV, the energy spectrum of photo-protons emitted by photons of energies 400±20 MeV has been derived.