Electron-electron and electron-positron bremsstrahlung

The bremsstrahlung emitted in electron-electron (e-e) and electron-positron (e(-)-e(+)) collisions is investigated. After a short description of the kinematics, cross sections exact to lowest-order perturbation theory are presented and compared with available approximations, and experiments on the two processes are described. The energy losses of electrons and positrons by emission of e-e and electron-positron bremsstrahlung are calculated. The spectra of e-e bremsstrahlung emitted by a hot thermal plasma and the total rate of energy loss due to this process are discussed. (C) 2006 Elsevier Ltd. All rights reserved.