Proton-Proton Bremsstrahlung Calculations

Abstract

Revised calculations of the cross section for the process $P+P\to P+P+\gamma$ are presented, using several models and various approximations. These are compared to the latest calculations of other authors. For the Hamada-Johnston potential, they are found to be in good agreement with the data, and with only a small discrepancy among authors. However, strong discrepancies are found with previously published values for the Tabakin and Bryan-Scott potentials and for the Feshbach-Yennie approximation. It is estimated that inclusion of the Coulombic interaction of the protons lowers most of the cross sections by 5-10%.