Review of bremsstrahlung experiments with free gas atom targets

Review of absolute doubly differential cross-section experiments and cross-section ratios for electron bremsstrahlung from rare gas atom and thin-film targets

“…The first of these additional background processes has been briefly discussed in a paper presented at CAARI 2004 (Quarles and Portillo, 2005). There is expected to be a photon spectrum in the beam line produced by electron beam interaction with beam-line collimators.…”

“…However, this observation does not insure that the photon spectrum in the beam is itself small. Quarles and Portillo (2005) have suggested that beam photons can Rayleigh scatter in the gas target and contribute an additional background to the bremsstrahlung spectrum. While Compton scattering can also occur, Rayleigh scattering is the dominant effect for the energies and target gases Ar, Kr and Xe studied so far.…”