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Observes nonlinear Compton scattering in electron beams, indicating novel interactions with laser light.
Nonlinear Compton scattering has been observed in the collision of a low-emittance 46.6-GeV electron beam with terawatt pulses from a Nd:glass laser at 1054 and 527 nm wavelengths in an experiment at the Final Focus Test Beam at SLAC. Peak laser intensities of 10¹⁸0ex0exW/cm² have been achieved, corresponding to a value of 0.6 for the parameter η0ex0ex=0ex0exeEᵣₘₛ/mω₀c. Results are presented for multiphoton Compton scattering in which up to four laser photons interact with an electron, in agreement with theoretical calculations.
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Bula et al. (1996) studied this question.
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