Signatures of High-Intensity Compton Scattering

Abstract: This paper discusses the predicted signatures of nonlinear Compton scattering, that will occur when a high-intensity laser beam is brought into collision with a beam of electrons from a linac. We consider various intensity effects on the emission spectrum of the scattered photons, both in terms of their frequencies and in terms of their scattering angles. At high intensities we predict a substantial redshift of the usual kinematic Compton edge of the photon spectrum caused by the large, intensity-dependent effective mass of the electrons inside the laser beam. In addition, we find that the notion of the centre-of-mass frame for a given harmonic becomes intensity dependent. Keywords: ,.