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Plasma and Gas-Dynamic Near-Electrode Processes in the Initial Phase of a Microstructured Spark Discharge in Air

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Abstract

The results of studies of the dynamics of near-electrode processes in the initial phase of a spark discharge in atmospheric-pressure air in the point-plane geometry are presented. After breakdown, regions of about 50 μm or more in size with an increased electron concentration of (3–8) × 1019 cm–3 near the surface of the flat cathode have been observed. With allowance for the experimental data on erosion effect of the discharge on the surface of a flat electrode and the associated gas-dynamic effects, a physical model of near-electrode processes has been proposed, based on which the gas-dynamic parameters are estimated.

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Funding

This work was supported by the Russian Foundation for Basic Research, project no. 20-08-01069a.

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Authors and Affiliations

  1. All Russia Research Institute of Experimental Physics, Russian Federal Nuclear Center, 607190, Sarov, Russia

    K. I. Almazova, A. N. Belonogov, V. V. Borovkov & A. A. Tren’kin

  2. Dagestan State University, 367000, Makhachkala, Dagestan, Russia

    V. S. Kurbanismailov, G. B. Ragimkhanov & Z. R. Khalikova

  3. Joint Institute for High Temperatures, Russian Academy of Sciences, 125412, Moscow, Russia

    D. V. Tereshonok

Authors
  1. K. I. Almazova
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  2. A. N. Belonogov
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  3. V. V. Borovkov
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  4. V. S. Kurbanismailov
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  5. G. B. Ragimkhanov
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  6. A. A. Tren’kin
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  7. D. V. Tereshonok
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  8. Z. R. Khalikova
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Corresponding author

Correspondence to G. B. Ragimkhanov.

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The authors declare that they have no conflict of interest.

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Translated by G. Dedkov

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Almazova, K.I., Belonogov, A.N., Borovkov, V.V. et al. Plasma and Gas-Dynamic Near-Electrode Processes in the Initial Phase of a Microstructured Spark Discharge in Air. Tech. Phys. Lett. 46, 737–740 (2020). https://doi.org/10.1134/S1063785020080039

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  • DOI: https://doi.org/10.1134/S1063785020080039

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