Superradiance in volume diffraction grating
Vladimir G. Baryshevsky, Konstantin G. Batrakov
Abstract
Volume Free Electron Laser (VFEL) was proposed in [1-4]. It can operate in the wide spectral range from microwaves to X-rays. To simulate the processes which take place in VFEL the superradiance from a short electron pulse moving in a volume diffraction grating is studied in wavelength range ~4 mm. It is supposed that Bragg condition for emitted photons is fulfilled and dynamical diffraction takes place. The spectral-angular distributions for transmitted and diffracted waves are derived. It is shown that the optimal geometry of diffraction exists and is determined by the energy and transverse size of electron beam.
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