NDLI: Vircator with electron beam premodulation built around a high-current pulsed-periodic accelerator

Content Provider	Springer Nature Link
Author	Kitsav, S. A. Klimov, A. I. Korovin, S. D. Kurkan, I. K. Pegel, I. V. Polevin, S. D.
Copyright Year	2002
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.
Starting Page	595
Ending Page	603
Page Count	9
File Format	PDF
ISSN	10637842
Journal	Technical Physics
Volume Number	47
Issue Number	5
e-ISSN	10906525
Language	English
Publisher	Nauka/Interperiodica
Publisher Date	2002-01-01
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mechanics, Fluids, Thermodynamics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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