Abstract
The spectral and amplitude-time characteristics of the emission of polymethyl methacrylate upon excitation by electron beams with electron energies up to 300 and 450 keV are studied. Vavilov-Cherenkov radiation and cathodoluminescence pulses were recorded with a subnanosecond time resolution. It is shown that the intensity of pulsed cathodoluminescence radiation in the visible and near ultraviolet spectral regions at electron energies of hundreds of keV exceeds the intensity of Vavilov-Cherenkov radiation.
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