Feedback in Plasma Maser

Buleyko, A. B.; Ponomarev, A. V.; Loza, O. T.; Ul’yanov, D. K.

doi:10.3103/s1541308x19040022

Cited by 6 publications

(5 citation statements)

References 9 publications

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“…The asymmetry of the fields with respect to the midpoint of the layer due to the difference in dielectric constants of the lefthand and right-hand media: at the field distributions become odd and even with respect to the midpoint of the plasma layer, but there is no radiative surface wave in this case. 5 According to Fig. 1, both waves of the plasma layer are slow, i.e., have a phase velocity less than the speed 5 At the region of wavenumbers in which one of the surface waves is radiative tends to zero.…”

Section: Atmentioning

confidence: 99%

“…5 According to Fig. 1, both waves of the plasma layer are slow, i.e., have a phase velocity less than the speed 5 At the region of wavenumbers in which one of the surface waves is radiative tends to zero. of light and can be resonantly excited by an electron beam (the excitation mechanism is the forced Cherenkov effect [3]).…”

Section: Atmentioning

confidence: 99%

“…In conclusion, we consider the above-mentioned possibility of using layered plasma-dielectric systems in the development of new promising electrodynamic systems for plasma microwave electronics. We recall that segments of plasma waveguides with an emitter at one of the ends are used as electrodynamic systems in plasma microwave electronics [3][4][5]. Plasma emitters (amplifiers and generators) successfully implemented to date use the magnetized plasma of the tubular geometry.…”

Section: R Imentioning

confidence: 99%

“…Surface plasma waves of various types are of great interest for applications in plasma microwave electronics [3]. Operating plasma microwave amplifiers and generators of electromagnetic radiation are based on the excitation of surface waves at the boundaries of the plasma layer by an electron beam [4,5]. In this work, we consider more complex and, as we believe, promising systems of plasma microwave electronics, in which, in addition to the plasma layer, there is also a dielectric layer.…”

mentioning

confidence: 99%

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Radiative Surface Waves in Layered Plasma–Dielectric Structures and Prospects of Their Application in Plasma Microwave Electronics

Kartashov

Кузелев

2021

Plasma Phys. Rep.

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Surface waves in layered systems consisting of material media with different frequency dispersions are considered: dielectric–plasma–vacuum, vacuum–plasma–plasma, and dielectric–vacuum–plasma. It is shown that in such systems, one of the surface waves can be radiative into a medium that does not form an interface for the surface wave under consideration, in view of which the wave becomes decaying. In the dielectric–vacuum–plasma system, there is only one surface wave localized at the vacuum–plasma interface, which is radiative into the dielectric in a certain region of wavenumbers with a not too small thickness of the vacuum layer. For all cases, the possibilities of exciting surface waves of a layered structure by an electron beam are analyzed. It is indicated which surface waves will be excited most efficiently. The prospects of using such waves in plasma microwave electronics in the development of sub-terahertz and possibly terahertz frequency ranges are shown.

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Section: Atmentioning

confidence: 99%

Section: Atmentioning

confidence: 99%

Section: R Imentioning

confidence: 99%

mentioning

confidence: 99%

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Radiative Surface Waves in Layered Plasma–Dielectric Structures and Prospects of Their Application in Plasma Microwave Electronics

Kartashov

Кузелев

2021

Plasma Phys. Rep.

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“…One of the most important tasks for modern radio engineering is the creation of ultra-wideband devices that could operate stably in a wide frequency range while maintaining a high power of microwave radiation. Such devices, in particular, are plasma relativistic microwave generators (PRGs) [1][2][3][4][5][6][7][8][9]. PRGs feature a wide range of operating frequencies (from 2 to 25 GHz), high signal power (50-100 MW), the ability to work in the mode of generating a single pulse or in a frequency-periodic mode, or in the mode of generating monochromatic or broadband radiation.…”

Section: Introductionmentioning

confidence: 99%

Frequency Dependence of the Directionality of the Output Radiation of a Plasma Relativistic Ultra-Frequency Generator

Saifulin

Andreev

Bogachev

et al. 2021

J. Commun. Technol. Electron.

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The output path characteristics of a plasma relativistic microwave generator (PRG) was investigated. The dependence of the directional pattern (DP), the directional action factor (directivity) and the transfer characteristic on the frequency in the range of 3-10 GHz are obtained. A significant change in the shape of the DP and an increase in the directivity with increasing frequency and good matching of the transfer characteristic in a wide frequency range were found. It is shown that in the considered radiation extraction system it is necessary to carry out the optimal choice of the operating frequency of the PRG on the basis of a compromise between a high value of directivity and distortion of the directional pattern.

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Experimental plasma maser as a broadband noise amplifier. I. Long pulse

et al. 2021

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Operated in the noise amplification regime, a plasma maser underwent a series of experiments. The pulse duration was 50 ns, the suppression of feedback was provided by microwave absorbers, transition from the noise amplification to a self-oscillation regime was demonstrated, and the maximum power of 10 MW with the efficiency of 3% was measured. For different plasma concentrations, the linear amplification rate was ranging from 0.1 to 0.2 cm−1. The frequency band of an emission pulse was 3–15 GHz, and the noise spectrum was stable during the pulse. The experiment provided the guidelines for further development, which are in the pulse duration reduction for abandoning the microwave absorber. The short-pulse plasma maser should be ∼35 cm long with the pulse duration < 4 ns. It will have more power and efficiency, a pulse spectrum width of 3 GHz, and tunable frequency band overlapping 3–14 GHz with the rise of plasma concentration.

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Feedback in Plasma Maser

Cited by 6 publications

References 9 publications

Radiative Surface Waves in Layered Plasma–Dielectric Structures and Prospects of Their Application in Plasma Microwave Electronics

Radiative Surface Waves in Layered Plasma–Dielectric Structures and Prospects of Their Application in Plasma Microwave Electronics

Frequency Dependence of the Directionality of the Output Radiation of a Plasma Relativistic Ultra-Frequency Generator

Experimental plasma maser as a broadband noise amplifier. I. Long pulse

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