Vircator with electron beam premodulation built around a high-current pulsed-periodic accelerator View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2002-05

AUTHORS

S. A. Kitsanov, A. I. Klimov, S. D. Korovin, I. K. Kurkan, I. V. Pegel, S. D. Polevin

ABSTRACT

Theoretical, numerical, and experimental studies of a vircator with the premodulation of a dm-wave electron beam are performed. Possible oscillation mechanisms in virtual-cathode systems (modulation of passing current, effect of reflex klystron, and inertial bunching of particles reflected) are analyzed. The microwave efficiency of the vircator using a two-gap electrodynamic system is shown to be significantly higher than that of the vircator with a one-gap system. Based on the results of the numerical experiment, a prototype of a two-stage vircator in the absence of an external magnetic field is designed. In experiments using a high-current pulsed-periodic accelerator, single-mode oscillations with a power of up to 1 GW, a duration of ≈25 ns, and an efficiency of ≈5% are generated in the dm-wave range. The oscillation frequency is demonstrated to be stable during a pulse and from pulse to pulse, which suggests the decisive effect of the electrodynamic system. It is shown that the oscillation frequency can continuously be tuned in a half-power bandwidth of ≈15% by varying the parameters of the resonator. More... »

PAGES

595-603

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/1.1479989

DOI

http://dx.doi.org/10.1134/1.1479989

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1009195042


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