The polarization of atomic states of helium in nanosecond discharge with slot cathode

Ашурбеков, Н. А.; Iminov, K. O.; Kobzeva, V. S.; Kobzev, O. V.

doi:10.1134/s0018151x1002001x

Cited by 4 publications

(3 citation statements)

References 6 publications

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“…However, technological sources of electron beams have some disadvantages, such as the need of using a high voltage source to attain the necessary beam power and a system of differential pump-down or a system for beam injection into the discharge chamber through a foil with a uniform cross-sectional distribution of the beam electron density. Therefore, pulsed nanosecond discharges are more and more often used for pumping active media of lasers where a beam of fast electrons is generated directly in the discharge during electrical breakdown of gas [1][2][3]. High-power nanosecond discharges also show promise for triggered high-voltage switches and direct current breakers, for injectors of high-current electron beams, and for other technological devices [4].…”

Section: Introductionmentioning

confidence: 99%

Modes of generation of the optical properties of a moderate-pressure nanosecond discharge with a slit cathode in argon

et al. 2009

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The spatial distribution of the optical radiation of the plasma in a discharge gap and inside the cathode cavity was experimentally investigated for a nanosecond transverse electrical discharge with a slit cathode in argon at moderate pressures. For the conditions investigated, estimates of the factor γ c have been obtained and the free paths of accelerated electrons in the plasma have been determined. It has been revealed that the structure of the optical radiation of a nanosecond discharge with a slit cathode is related to the features of the fast electron energy relaxation.

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Section: Introductionmentioning

confidence: 99%

Modes of generation of the optical properties of a moderate-pressure nanosecond discharge with a slit cathode in argon

et al. 2009

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“…Plasma-beam discharges can be generated in both longitudinal and transverse schemes of pulsed discharge. From the standpoint of practical applications, the most promising solution is offered by a transverse nanosecond pulsed discharge, which requires lower discharge voltage amplitudes [3]. Despite successful use of the plasma-beam discharge for the pumping of active media in gas lasers [4,5] and for the generation of highcurrent electron and ion beams [6], the physics of this discharge is still not completely clear and requires further investigation.…”

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“…The discharge was confined (from the sides free of electrodes) between two textolite plates, thus occupying a volume (including the cavity in the cathode) with a width of 1.2 cm, a thickness of 0.2 cm, and a length of 40 cm. The experimental setup, the scheme of a pulsed voltage generator, and the methods of discharge and emission characterization have been described in detail elsewhere [3,7].…”

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confidence: 99%

10.1007/s11455-008-1003-0

2010

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The electrical and optical characteristics of a transverse nanosecond pulsed electric discharge confined between dielectric walls in a helium-filled diode with a hollow (slit) cathode has been experimentally studied in the range of gas pressures of 1-100 Torr. It is shown that the cathode current density in the anomalous glow discharge regime is several orders of magnitude greater than the anode current density. A relationship is established between the characteristic radiation relaxation time and the fast diffusion cooling of electron gas after the jump in the near-wall potential. PACS numbers: 52.40.Mj

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Numerical simulation of a partially anisotropic electron distribution function in a pulsed discharge with a hollow cathode

et al. 2022

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In this paper, we propose a convenient method for calculating the electron energy distribution function (EEDF) in a gas-discharge plasma, where the presence of high-energy electrons results in the formation of a partial EEDF anisotropy. A detailed description of this method is provided. The performance of the proposed method is demonstrated to calculate the EEDF of plasma column of a high-voltage nanosecond discharge in argon with an extended hollow cathode. The applicability assessment of the proposed method calculating the EEDF in the plasma column of pulsed discharge sustained by the 50 Hz pulse and gas pressure from 5 to 40 Torr is given. It was shown that high-energy electrons were effectively formed in this type of discharge with an increase in the EEDF in the high-energy region. This technique can also be usefully employed for other types of discharges where fast electrons are formed.

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The polarization of atomic states of helium in nanosecond discharge with slot cathode

Cited by 4 publications

References 6 publications

Modes of generation of the optical properties of a moderate-pressure nanosecond discharge with a slit cathode in argon

Modes of generation of the optical properties of a moderate-pressure nanosecond discharge with a slit cathode in argon

10.1007/s11455-008-1003-0

Numerical simulation of a partially anisotropic electron distribution function in a pulsed discharge with a hollow cathode

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