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Study of the Effect of the Anode on EEDF and the Spatial Profile of the Electron Density in a Discharge with a Hollow Cathode in Helium

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Abstract

The electron energy distribution function (EEDF) and the spatial profile of the electron density in the cathode–anode gap in a helium discharge are calculated within a one-dimensional model by the Monte Carlo method. Numerical studies are performed for experimental conditions known from the literature in a discharge with a hollow cathode: the cathode–anode distance of 3 cm, the helium pressure of 0.75 Torr, and the electric field strength in the discharge gap of 1.3 V/cm. The calculations are performed without and with allowance for the anode potential drop and the effect of electron reflection from the anode. The dependence of the form of EEDF on the energy spectrum of the electron source used in the calculations is also studied. In all variants of calculations, the main feature of the EEDF is retained, that is, a significant depletion of the low-energy part of the distribution function due to the effect of electron absorption by the anode. The calculated EEDF and the spatial profile of the electron density are compared with the available experimental data.

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Funding

The work was supported by the Russian Science Foundation (project no. 19-12-00310).

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Authors and Affiliations

  1. Lebedev Physical Institute, Russian Academy of Sciences, 119991, Moscow, Russia

    S. N. Andreev, A. V. Bernatskiy, N. A. Dyatko, I. V. Kochetov & V. N. Ochkin

  2. Troitsk Institute for Innovation and Fusion Research, 108840, Troitsk, Moscow, Russia

    N. A. Dyatko & I. V. Kochetov

Authors
  1. S. N. Andreev
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  2. A. V. Bernatskiy
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  3. N. A. Dyatko
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  4. I. V. Kochetov
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  5. V. N. Ochkin
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Corresponding author

Correspondence to N. A. Dyatko.

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The authors declare that they have no conflicts of interest.

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Translated by L. Mosina

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Andreev, S.N., Bernatskiy, A.V., Dyatko, N.A. et al. Study of the Effect of the Anode on EEDF and the Spatial Profile of the Electron Density in a Discharge with a Hollow Cathode in Helium. Plasma Phys. Rep. 49, 1031–1037 (2023). https://doi.org/10.1134/S1063780X23600846

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  • DOI: https://doi.org/10.1134/S1063780X23600846

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