Keywords: Brem cross section ln.png Bremsstrahlung Cross section for the emission of a 30 keV photon Gringo ch on en wikipedia 2006-12-01 haade Own work all rights released Public Domain http //en wikipedia org/wiki/Image Brem_cross_section png Bremsstrahlung cross section for the emission of a photon with energy 30 keV by an electron impacting on a proton S 0 is cross section E<sub>e</sub> is electron energy Blue curve is non-relativistic approximation Red curve is Ultra-relativistic approximation Black curve is resulting cross section Changes from source Removed english text rescaled to eV barn on cross section and moved to commons Bremsstrahlung |