Abstract

The nonlinear Compton backscattered radiation of an ultra-intense laser pulse by counterpropagating relativistic electrons was numerically investigated. The spectral characteristics of high-order harmonics were analyzed for a single electron case. In the case of an electron beam, the harmonic spectrum was investigated based on beam parameters. With a 32-MeV electron beam and a 10-Hz, 5×10-W/cm laser pulse, 10 ∼ 10 photons/s in a 1% bandwidth could be generated in the range of 10 ∼ 80 keV.

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