Scattering of 25-87 Mev Photons by Protons

Scattering of 87-Mev bremsstrahlung by liquid hydrogen has been measured with a lead converter-telescope arrangement at angles from 70-150 degrees. The weighting function of the cross-section peaks at 60 Mev, has a full width of 55 Mev, and is approximately symmetrical. In this angular range contributions from processes other than elastic scattering from protons are believed to be small. The observed cross sections are somewhat smaller and flatter in angular distribution than those given by Powell's formula for scattering by a point proton with the static anomalous moment.