Generation of a Directed Flux of Megawatt THz Radiation as a Result of Strong REB-Plasma Interaction in a Plasma Column

Samtsov, Denis A.; Аржанников, А. В.; Sinitsky, S. L.; Макаров, М. А.; Kuznetsov, Sergei A.; Kuklin, K. N.; Попов, Сергей Сергеевич; Sandalov, Evgeny S.; Rovenskikh, A. F.; Kasatov, A. A.; Stepanov, V. D.; Иванов, И. А.; Тимофеев, И. В.; Annenkov, V. V.; Glinskiy, Vladimir V.

doi:10.1109/tps.2021.3108880

Cited by 9 publications

(8 citation statements)

References 8 publications

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“…This series of experiments was aimed at studying the properties of THz radiation flux in the presence of significant radial density gradients in the plasma column and plasma density drop in the exit unit of the facility. Such transverse and longitudinal distributions of plasma density lead to a significant increase in the power of the emitted THz flux, as shown in [41] and [44]. The required density distribution is created by a high-voltage discharge in a hydrogen cloud puffed into the vacuum chamber.…”

Section: A Creation Of the Required Plasma Density Distributionmentioning

confidence: 97%

Energy Content and Spectral Composition of a Submillimeter Radiation Flux Generated by a High-Current Electron Beam in a Plasma Column With Density Gradients

Аржанников

Sinitsky

Попов

et al. 2022

IEEE Trans. Plasma Sci.

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This article presents the results of experimental studies on radiation flux generation in the submillimeter wavelength range due to a strong beam-plasma interaction. A relativistic electron beam (REB) with parameters 0.5 MeV/12 kA/6 µs pumps plasma waves in a plasma column with a length of ∼2 m at a plasma density of ∼10 15 cm −3 in a magnetic field of ∼4 T. In the presence of density gradients in the plasma column, direct measurements of the energy content of the radiation flux 18 cm in diameter leaving the plasma column into the atmosphere showed that its value reaches 5-7 J. The pulse duration of the flux at half of its amplitude was about 0.5 µs, and therefore, the pulse power was at the level of ∼10 MW. In this series of experiments, the spectral composition of the radiation flux in the frequency range of 0.1-0.5 THz and the energy distribution function of the beam electrons passed through the plasma have been measured.

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Section: A Creation Of the Required Plasma Density Distributionmentioning

confidence: 97%

Energy Content and Spectral Composition of a Submillimeter Radiation Flux Generated by a High-Current Electron Beam in a Plasma Column With Density Gradients

Аржанников

Sinitsky

Попов

et al. 2022

IEEE Trans. Plasma Sci.

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“…This series of experiments was aimed at studying the properties of the THz radiation flux in the presence of significant radial density gradients in the plasma column and the plasma density drop in the exit unit of the facility. Such transverse and longitudinal distributions of the plasma density lead to a significant increase in the power of the emitted THz flux, as shown in [41,44]. The required density distribution is created by a high-voltage discharge in a hydrogen cloud puffed into the vacuum chamber.…”

Section: A Creation Of the Required Plasma Density Distributionmentioning

confidence: 98%

“…Such a change in the experimental conditions led to an increase in the output radiation power and, in turn, to the initiation of the glow of the panel with neon bulbs. After obtaining a radiation flux with a power density sufficient to ignite a breakdown in neon bulbs, experiments were carried out on the spatial distribution of the THz radiation flux density [44]. A photo of the glowing panel with neon bulbs is presented in Fig.…”

Section: B Measurements Of Cross Section and Energy Content Of Submm ...mentioning

confidence: 99%

“…An emitting satellite with a wave vector Q=k-q now propagates at an angle to the z axis and has a finite magnetic component. Recent particle-in-cell simulations [44] showed that, outside the beam relaxation region, this satellite transforms into EM plasma eigenmodes with close wavenumbers, which then propagate to the plasma boundary and exit into vacuum.…”

Section: Theoretical Estimates For the Efficiency Of The Submm Flux G...mentioning

confidence: 99%

“…Moreover, as our studies have shown, it is possible to implement conditions under which a kiloampere REB directly pumps electromagnetic waves in the frequency range 0.1-1 THz [40,41]. Within the framework of this paper, the mechanisms of generating the radiation fluxes in the millimeter and submillimeter ranges during the beam-plasma interaction are investigated [42][43][44][45]. It should be noted here that the frequency of electromagnetic radiation generated by the three indicated mechanisms could be quickly varied due to the rapid change in the plasma density.…”

Section: Introductionmentioning

confidence: 98%

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Energy Content and Spectral Composition of a Sub-Millimeter Radiation Flux Generated by a High-Current Electron Beam in a Plasma Column with Density Gradients

Sandalov¹

2022

Preprint

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<div>The paper presents the results of experimental studies on the radiation flux generation in the sub-millimeter wavelength range due to a strong beam-plasma interaction. A relativistic electron eam (REB) with parameters 0.5 MeV / 12 kA / 6 us pumps plasma waves in a plasma column with a length of ~2 m at a plasma density of ~10^15cm-3 in a magnetic field of B~4 T. In the presence of density gradients in the plasma column, direct measurements of the energy content of the radiation flux 18 cm in diameter leaving the plasma column into the atmosphere showed that its value reaches 5-7 J. The pulse duration of the flux at half of its amplitude was about of 0.5 ?s, therefore, the pulse power was at the level of ~ 10 MW. In this series of experiments, the spectral composition of the radiation flux in the frequency range 0.1-0.5 THz as well as the energy distribution function of the beam electrons passed through the plasma have been measured.</div>

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Frequency Spectrum of the Radiation Flow in the Frequency Range 0.1–0.6 THZ Generated at the GOL–PET Facility Under Various Conditions

Samtsov

Аржанников

Sinitsky

et al. 2022

Radiophys Quantum El

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Generation of a Directed Flux of Megawatt THz Radiation as a Result of Strong REB-Plasma Interaction in a Plasma Column

Cited by 9 publications

References 8 publications

Energy Content and Spectral Composition of a Submillimeter Radiation Flux Generated by a High-Current Electron Beam in a Plasma Column With Density Gradients

Energy Content and Spectral Composition of a Submillimeter Radiation Flux Generated by a High-Current Electron Beam in a Plasma Column With Density Gradients

Energy Content and Spectral Composition of a Sub-Millimeter Radiation Flux Generated by a High-Current Electron Beam in a Plasma Column with Density Gradients

Frequency Spectrum of the Radiation Flow in the Frequency Range 0.1–0.6 THZ Generated at the GOL–PET Facility Under Various Conditions

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