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Research on the luminescence of crystals due to ionizing radiation is an important field in spectral analysis of solids that allows determination of the chemical composition of material, its structure (the presence of defects), state (internal stress), etc. [Marfunin; Gritsenko et al.; Kravchenko et al.; SolomonovM Korepanov et al., 2000; Korepanov et al., 2005; Kravchenko et al.; Lipatov et al., 2007 (1); Lisitsyna et al., 2002; Lisitsyna et al., 2008; Lisitsyna et al., 2011; SolomonovM the electron energy in a vacuum diode is determined by the voltage across the interelectrode gap. However with short beam current pulses (100 ps), the design of accelerators with vacuum diodes is added much complexity [Zheltov]. In this case, electron accelerators with gas diodes are more preferable to use [Tarasenko et al., 2008; Tarasenko et al., 2009; Tarasenko et al., 2010]; they are simpler in design and make it possible to produce an electron beam of current density 100 А/cm2 and to control the pulse duration in the range from 100 to 500 ps [Baksht]. In this work, experiments were performed on two electron accelerators with vacuum and gas diodes. Compact electron accelerators based on vacuum and gas-filled diodes ensure high-intensity pulsed cathodoluminescence (PCL) typical of high-current electron beams [Solomonov&Mikhailov].

Pulsed Cathodoluminescence of Natural and Synthetic Diamonds Excited by Nanosecond and Subnanosecond Electron Beams