Runaway electron beam generation by a plasma cathode in atmospheric air discharge

Mastyugin, D. S.; Осипов, В. В.; Solomonov, V. I.

doi:10.1134/s1063785009060029

Cited by 15 publications

(5 citation statements)

References 3 publications

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“…In recent years, the generation of beams of fast electrons (runaway electrons) has been the subject of increasing interest [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. It was shown that in atmospheric pressure air, the FWHM of the e-beam current pulse is ∼0.1 ns at a generator voltage ranging to over ∼100 kV [4], and the amplitude of the e-beam current downstream of the gas diode foil can reach ∼50 A [8,12].…”

Section: Introductionmentioning

confidence: 99%

Spectrum of fast electrons in a subnanosecond breakdown of air-filled diodes at atmospheric pressure

Бакшт¹,

Бураченко²,

Kozhevnikov³

et al. 2010

J. Phys. D: Appl. Phys.

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In this work, the spectra of electron beams produced in air-filled diodes at atmospheric pressure were studied for different cathode designs. The feasibility of correct reconstruction of the electron beam spectrum from an experimental dependence of its attenuation factor in foils of different thicknesses was demonstrated. The electron energy distributions were calculated on minimum a priori assumptions by regularization of an ill-posed problem—a Fredholm integral equation. The spectra of a subnanosecond electron beam generated in the gas gap during the voltage pulse rise time were reconstructed and analysed. A time-of-flight spectrometer study and reconstruction of the spectrum from the data on e-beam attenuation confirmed the fact that groups of electrons with two-three characteristic energies can be generated in gas-filled diodes. In experiments, electrons of energy greater than that corresponding to the nominal voltage amplitude across the gap were detected.

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Section: Introductionmentioning

confidence: 99%

Spectrum of fast electrons in a subnanosecond breakdown of air-filled diodes at atmospheric pressure

Бакшт¹,

Бураченко²,

Kozhevnikov³

et al. 2010

J. Phys. D: Appl. Phys.

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“…Such phosphors are now widely used in devices with high resolution screens, as intensifying x-ray screens, etc, and glow with a yellow-green light. For the first time, such a phosphor for registering RAEs in an atmospheric pressure discharge gap was used by Professor Solomonov et al [82]. It is known that the effect of cathodoluminescence takes place in the subnanosecond range [83].…”

Section: Factors Limiting the Pulse Breakdown Voltage At Hydrogen Pre...mentioning

confidence: 99%

“…The 'CLAVI Pulsed Cathodoluminescence Spectroscope' designed to study the cathodoluminescence spectra of various minerals was created at the Institute of Electrophysics of the Ural Branch of the Russian Academy of Sciences [83]. And, as Professor Solomonov said in a private conversation with the author of this article, before carrying out the described in [82] experiments, he tested the phosphorus ZnS-CdS:Ag for the presence of cathodoluminescence on the installation 'CLAVI Pulsed Cathodoluminescence Spectroscope'. And he showed that this x-ray phosphorus is well glowed not only under the influence of x-ray radiation, but also under the influence of an electron beam.…”

Section: Factors Limiting the Pulse Breakdown Voltage At Hydrogen Pre...mentioning

confidence: 99%

Investigation of the switching characteristics of high-pressure subnanosecond gas dischargers with the purpose of a sharp increasing of the breakdown voltages and the switching speed

Ivanov¹

2022

Plasma Sources Sci. Technol.

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The paper analyzes the data obtained in the subnanosecond time range on the times (t br) and speeds (V br) of switching of hydrogen diode dischargers. These data were obtained in a wide range of hydrogen pressures (p) and the degree of the discharge gap overvoltage (the length of the cathode-anode gap d) in a uniform electric field. It is shown that the reduced strength of the average electric field E br/p in the discharge gap at the moment of the beginning of the breakdown significantly decreases when the gas pressure increases from 5 atm to 50 atm. An increase in pressure from 50 atm to 60 atm leads to a sharp (by 40–135%, depending on the d) increase in the pulse breakdown voltage (U br) and an increase in E br/p. In proportion to the growth of E br/p the switching speed V br of the discharge gas gap increases. The observed effect is explained by the change in the discharge initiation mechanisms. The limitation of U br and V br in the hydrogen pressure range from 5 atm to 50 atm occurs as a result of gas ionization by runaway electrons and the subsequent development of a multi-avalanche discharge in the volume of the discharge gap. With a further increase in pressure, the discharge develops according to the streamer type. To design ultrafast gas dischargers of the subnanosecond range intended for switching high voltages, it is necessary to select an appropriate range of working gas pressures in order to ensure the development of a streamer-type discharge.

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“…Recent years have brought much interest in study of ebeam and X-ray generation in gas diodes at high pressure [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Research in this field made possible to create a compact gas-diode accelerator that ensures a considerable increase in supershort avalanche electron beam (SAEB) amplitude in atmospheric pressure air [16,17].…”

Section: Introductionmentioning

confidence: 99%

Slep-150m and SLEP-150 compact accelerators of supershort avalanche electron beams and X-rays in atmospheric pressure air

Тарасенко

Рыбка

Kostyrya

et al. 2011

2011 IEEE Pulsed Power Conference

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The objective of the investigation was to measure the amplitude and duration of a supershort avalanche electron beam (SAEB) generated in atmospheric pressure air and to optimize the cathode design in compact accelerators with gas diodes to increase the SAEB amplitude. The number of electrons and the X-ray exposure dose measured downstream of a gas diode foil in atmospheric pressure air were 6.2 × 10 10 and 1.8 mR, respectively.

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Runaway electron beam generation by a plasma cathode in atmospheric air discharge

Cited by 15 publications

References 3 publications

Spectrum of fast electrons in a subnanosecond breakdown of air-filled diodes at atmospheric pressure

Spectrum of fast electrons in a subnanosecond breakdown of air-filled diodes at atmospheric pressure

Investigation of the switching characteristics of high-pressure subnanosecond gas dischargers with the purpose of a sharp increasing of the breakdown voltages and the switching speed

Slep-150m and SLEP-150 compact accelerators of supershort avalanche electron beams and X-rays in atmospheric pressure air

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