A possible method of reducing the magnetic field in a relativistic backward-wave tube

Kurkan, I. K.; Rostov, V. V.; Totmeninov, E. M.

doi:10.1134/1.1262101

Cited by 44 publications

(10 citation statements)

References 2 publications

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“…To improve the situation, it was proposed to use a passband wave reflector instead of cutoff neck type reflector, which allows a moderate (by a factor of 1.5-2) increase in SWS cross dimension with the BWO operating mode remaining unchanged. Such a configuration opened up the prospect for the attainment of highly efficient generation of SR pulses at a reduced transporting magnetic field [9] for the case , where is the cyclotron frequency. An increase in the SWS cross section allows one to narrow down the absorption band of the microwaves in the cyclotron resonance range and to optimize coupled impedance of the BWO for the case of an increased gap between the beam and SWS wall.…”

Section: Rementioning

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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Section: Rementioning

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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“…Another direction of research was to increase the microwave efficiency in low magnetic fields (for the case producible by permanent magnets) by modifying a BWO to achieve a spatially nonuniform slow-wave structure (SWS) [37].…”

Section: B Relativistic Bwomentioning

confidence: 99%

“…This method of cyclotron selection of waves requires precise alignment of the electron beam [35]. The problem of reducing the guide magnetic field can be resolved (while maintaining operation in the TM mode) by using for radiation output a selective reflector, which simultaneously plays the role of a modulating section [37] (Fig. 8).…”

Section: B Relativistic Bwomentioning

confidence: 99%

Pulsed power-driven high-power microwave sources

et al. 2004

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The advent of pulsed power technology in the 1960s has enabled the development of very high peak power sources of electromagnetic radiation in the microwave and millimeter wave bands of the electromagnetic spectrum. Such sources have applications in plasma physics, particle acceleration techniques, fusion energy research, high-power radars, and communications, to name just a few. This article describes recent ongoing activity in this field in both Russia and the United States. The overview of research in Russia focuses on high-power microwave (HPM) sources that are powered using SINUS accelerators, which were developed at the Institute of High Current Electronics. The overview of research in the United States focuses more broadly on recent accomplishments of a multidisciplinary university research initiative on HPM sources, which also involved close interactions with Department of Defense laboratories and industry. HPM sources described in this article have generated peak powers exceeding several gigawatts in pulse durations typically on the order of 100 ns in frequencies ranging from about 1 GHz to many tens of gigahertz.Keywords-High-power microwave (HPM), intense electron beams, pulsed power.

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“…In X-band, raising of the generated power up to the level of ≈ 1 GW results in the necessity for enlarging the diameter D of the slow wave structure (SWS) in comparison with the wavelength λ to prevent the microwave breakdown [1]. The reduction of maximal electric fields at the SWS has been achieved in the BWO with resonant reflector at D ≈ 1.5 λ [2] which allowed us to increase the output microwave power up to 3 GW at the pulse width of 20 ns [1,3]. The further grow of D leads to the mode competition.…”

Section: Introductionmentioning

confidence: 99%

About the selection of transverse modes in the X-band oversized oscillator with 2.5 GW output power

Tsygankov

Rostov

Gunin

et al. 2017

J. Phys.: Conf. Ser.

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A possible method of reducing the magnetic field in a relativistic backward-wave tube

Cited by 44 publications

References 2 publications

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

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

Pulsed power-driven high-power microwave sources

About the selection of transverse modes in the X-band oversized oscillator with 2.5 GW output power

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