We report the observation of coherent emission from a Cherenkov free-electron laser driven by a 5-MeV radio-frequency microtron. Power up to 50 W in pulses of 4-{μ}s duration has been generated at the wavelengths of 1.6 and 0.9 mm using two different dielectric-loaded waveguides.
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Ciocci et al. (1991) studied this question.
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