CALCULATION OF THE ELECTRON-PROTON SCATTERING CROSS-SECTIONS IN A STRONGLY MAGNETIZED PLASMA

We calculate and discuss the differential cross sections for nonrelati vistic electrons in a strong magnetic field scattered by free protons with and without the emission of a photon. The electrons are assumed t o be in the lowest Landau state before and after scattering. Forward s cattering is the dominant part of the cross section but leads only to a small energy change per scattering. Another relevant contribution oc curs if a cyclotron photon is emitted during the scattering event. Thi s resonant process can change the electron energy by a large amount.