Signatures of High-Intensity Compton Scattering

Details Signatures of High-Intensity Compton Scattering Signatures of High-Intensity Compton Scattering

2009-03-24

arxiv.org/abs/0903.4151v1

Phys.Rev.A79:063407,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, 16 .eps figures

Scientific paper

10.1103/PhysRevA.79.063407

We review known and discuss new signatures of high-intensity Compton scattering assuming a scenario where a high-power laser is brought into collision with an electron beam. At high intensities one expects to see a substantial red-shift of the usual kinematic Compton edge of the photon spectrum caused by the large, intensity dependent, effective mass of the electrons within the laser beam. Emission rates acquire their global maximum at this edge while neighbouring smaller peaks signal higher harmonics. In addition, we find that the notion of the centre-of-mass frame for a given harmonic becomes intensity dependent. Tuning the intensity then effectively amounts to changing the frame of reference, going continuously from inverse to ordinary Compton scattering with the centre-of-mass kinematics defining the transition point between the two.

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