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.
| Original language | English |
|---|---|
| Pages (from-to) | 595-603 |
| Number of pages | 9 |
| Journal | Technical Physics |
| Volume | 47 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 1 May 2002 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
Cite this
Vircator with electron beam premodulation built around a high-current pulsed-periodic accelerator. / Kitsanov, S. A.; Klimov, Alexey Ivanovich; Korovin, S. D.; Kurkan, I. K.; Pegel, I. V.; Polevin, S. D.
In: Technical Physics, Vol. 47, No. 5, 01.05.2002, p. 595-603.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Vircator with electron beam premodulation built around a high-current pulsed-periodic accelerator
AU - Kitsanov, S. A.
AU - Klimov, Alexey Ivanovich
AU - Korovin, S. D.
AU - Kurkan, I. K.
AU - Pegel, I. V.
AU - Polevin, S. D.
PY - 2002/5/1
Y1 - 2002/5/1
N2 - 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.
AB - 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.
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U2 - 10.1134/1.1479989
DO - 10.1134/1.1479989
M3 - Article
VL - 47
SP - 595
EP - 603
JO - Technical Physics
JF - Technical Physics
SN - 1063-7842
IS - 5
ER -