Abstract
An efficient microwave oscillator (320 MW and 7.9 GHz) that generates microwave pulses with a duration of 90 ns is developed using optimization of an electron-wave system and decompression of the longitudinal magnetic field with a maximum induction of 0.62 T in the region of an explosive-emission cathode and a lower field (0.36 T) with respect to cyclotron resonance in the slow-wave structure. In a packet (up to 10 ns) repetitively-pulsed (100 Hz) regime, the maximum conversion efficiency of the electron-beam power to microwave radiation is 27%. The mean energy of the radiation pulse (23 J) is about 18% of the pulse energy of high-voltage oscillator.
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Original Russian Text © E.M. Tot’meninov, P.V. Vykhodtsev, A.V. Gunin, A.I. Klimov, V.V. Rostov, 2014, published in Zhurnal Tekhnicheskoi Fiziki, 2014, Vol. 84, No. 3, pp. 120–125.
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Tot’meninov, E.M., Vykhodtsev, P.V., Gunin, A.V. et al. Increase in the energy efficiency of a pulsed-periodic relativistic backward wave oscillator with a modulating resonant reflector. Tech. Phys. 59, 428–433 (2014). https://doi.org/10.1134/S1063784214030268
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DOI: https://doi.org/10.1134/S1063784214030268