High-power subnanosecond 38-GHz microwave pulses generated at a repetition rate of up to 3.5 kHz

Grishin, D.M.; Gubanov, V. P.; Korovin, S. D.; Lyubutin, S. K.; Mesyats, G. A.; Nikiforov, Aleksey Valerievich; Rostov, V. V.; Rukin, S. N.; Slovikovskiĭ, B. G.; Ul’maskulov, M. R.; Sharypov, K. A.; Shpak, V. G.; Shunaĭlov, S. A.; Yalandin, M. I.

doi:10.1134/1.1519013

Cited by 43 publications

(7 citation statements)

References 2 publications

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“…Actually, even when the oscillator operates under the conditions that the e-beam and the counter electromagnetic wave are off cyclotron resonance, a rather strong guide magnetic field is required (∼2 T). Therefore, as distinct from the dc magnetic systems of X-band BWOs [29], [30], the radius of the dc solenoid winding of a K a-band oscillator [31] is comparable with the axial length of the beam-wave interaction space; that is, small-scale profiling [varying r b (z)] is difficult to perform. It is much simpler to obtain the required magnetic line topology using a magnetic pulse generator with a properly thin solenoid [32], [33].…”

Section: Bwo Oscillation Mode Control Capabilitiesmentioning

confidence: 99%

Control of the Operation Mode of a Relativistic <italic>Ka</italic>-Band Backward-Wave Oscillator

Boltachev

Rostov

Sharypov

et al. 2015

IEEE Trans. Plasma Sci.

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Variations in the transient time and in the microwave pulse duration and peak power have been demonstrated for a relativistic subgigawatt K a-band backwardwave oscillator (BWO) with the slow-wave structure geometry, the accelerating voltage, and the electron beam current remained unchanged. This was done taking into account that the BWO operation mode depends on the starting-current-tobeam-current ratio. Efficient variation of the starting current was attained by changing the beam path in view of a significant difference between the times of the guide pulsed magnetic field diffusion into the electron injection region and beam-wave interaction space.

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Section: Bwo Oscillation Mode Control Capabilitiesmentioning

confidence: 99%

Control of the Operation Mode of a Relativistic <italic>Ka</italic>-Band Backward-Wave Oscillator

Boltachev

Rostov

Sharypov

et al. 2015

IEEE Trans. Plasma Sci.

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“…The study presented above was an indispensable preliminary stage of the following experiment (4 in Table I), where Ka band SR pulses were generated for the first time in a high-PRF mode of operation [14]. The experimental device employed the SWS adopted from experiment [13] as well as involving a hybrid modulator consisting of several energy compression stages with a semiconductor opening switch (SOS) current interrupter and a hydrogen peaking switch (100 atm) at the output.…”

Section: B Ka Band Experimentsmentioning

confidence: 99%

Review of Studies of Superradiative Microwave Generation in X Band and Ka Band Relativistic BWOs (Review)

Eltchaninov

Korovin

Mesyats

et al. 2004

IEEE Trans. Plasma Sci.

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This paper presents a review of recent studies of superradiant (SR) regime of high-power microwave generation of relativistic backward-wave tubes. The fundamental possibility of producing microwave pulses with peak power substantially exceeding the driving electron beam power was demonstrated in theory and simulation. In experiments, beam-to-microwaves power conversion factors of 1.5 in the Ka band and up to 1.8 in the X band were achieved. High-efficiency Ka band generation was obtained at a low field (2 T) below the cyclotron resonance. With the use of a dc solenoid, SR pulses were generated in a batch mode at a pulse repetition frequency of 1000-3500 Hz.

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“…Until now, SR pulses whose peak power exceeds the power of a feeding electron beam have been obtained [34][35][36][37][38]. Simultaneously, improving the accelerator technique allowed one to realize regimes of periodic repetition of SR pulses with high (kilohertz) clock rate [17,19,[39][40][41][42][43][44]. The modern state-of-the-art of this class of oscillators is analyzed in Sec.…”

Section: Introductionmentioning

confidence: 99%

Generation of high-power ultrashort electromagnetic pulses on the basis of effects of superradiance of electron bunches

Zotova

Pegel

Rostov

et al. 2007

Radiophys Quantum El

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One of the promising methods for generation of ultrashort electromagnetic pulses (with duration of about ten periods of high-frequency oscillations) is radiation from spatially localized electron ensembles (bunches), which can be considered a classical analog of Dicke superradiance known in quantum electronics. In classical electronics, superradiance can be related to various mechanisms of stimulated radiation. Until now, cyclotron, undulator, andČerenkov (in the case of interaction with both copropagating and counterpropagating waves) superradiance of electron bunches as well as superradiance during stimulated scattering of a pump wave have been studied theoretically and experimentally. As a result of these studies based on high-current RADAN and SINUS accelerators and their modifications, a new class of oscillators producing pulsed electromagnetic radiation has been created. They have such unique characteristics as pulses of high peak power (up to 1 GW and 3 GW in the millimeter-and centimeter-wave ranges, respectively) and ultrashort duration (from 300 ps to 1 ns, respectively). In this case, regimes with a peak radiation power exceeding the electron-beam power are experimentally realized. Regimes with high (kilohertz) pulse repetition rate and high average power (up to 2.5 kW) are obtained.

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High-power subnanosecond 38-GHz microwave pulses generated at a repetition rate of up to 3.5 kHz

Cited by 43 publications

References 2 publications

Control of the Operation Mode of a Relativistic <italic>Ka</italic>-Band Backward-Wave Oscillator

Control of the Operation Mode of a Relativistic <italic>Ka</italic>-Band Backward-Wave Oscillator

Review of Studies of Superradiative Microwave Generation in X Band and Ka Band Relativistic BWOs (Review)

Generation of high-power ultrashort electromagnetic pulses on the basis of effects of superradiance of electron bunches

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