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TVT, 2019, Volume 57, Issue 2, Pages 164–173 (Mi tvt11040)  

This article is cited in 1 scientific paper (total in 1 paper)

Plasma Investigations

Highly ionized arc $ He$ plasma: Nonequilibrium, nonideality, and kinetics

O. V. Korshunov, V. F. Chinnov, D. I. Kavyrshin

Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow

Abstract: We have experimentally established that a strongly ionized, arc He plasma of atmospheric pressure does not exist in the state of the local thermodynamic equilibrium (LTE) expected for a plasma with an electron concentration above $10^{16}$ cm$^{-3}$. We discover that this is caused by transverse plasma nonuniformity and density effects. The plasma quasistatic microfield destroys the upper electron levels of He atoms, and the radial ambipolar diffusion flow transports the charged particles from the narrow $(1$$2$ mm$)$ plasma channel on the chamber wall. In the distribution of atoms and the ions over the excited levels, we observe strong ionization nonequilibrium and a large gap of the ground state; these factors cause large difficulties in the spectral diagnostics of the plasma parameters due to the inapplicability of the relations respecting to the equilibrium conditions. We propose a method to measure the concentration of double-charged ions $ He^{++}$ ($\alpha$-particle), which is inaccessible by direct spectral registration, as well as a simple kinetic model of strongly ionized He plasma with the use of a modified diffusion approximation; the model adequately describes the plasma parameters.

Funding Agency Grant Number
Russian Foundation for Basic Research 18-32-00292
The study is supported by the Russian Foundation for Basic Research, project no. 18-32-00292.


DOI: https://doi.org/10.1134/S0040364419010319

Full text: PDF file (608 kB)
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English version:
High Temperature, 2019, 57:2, 147–155

Bibliographic databases:

UDC: 537.523.5; 533.93
Received: 20.04.2018
Accepted:05.06.2018

Citation: O. V. Korshunov, V. F. Chinnov, D. I. Kavyrshin, “Highly ionized arc $ He$ plasma: Nonequilibrium, nonideality, and kinetics”, TVT, 57:2 (2019), 164–173; High Temperature, 57:2 (2019), 147–155

Citation in format AMSBIB
\Bibitem{KorChiKav19}
\by O.~V.~Korshunov, V.~F.~Chinnov, D.~I.~Kavyrshin
\paper Highly ionized arc $\rm He$ plasma: Nonequilibrium, nonideality, and kinetics
\jour TVT
\yr 2019
\vol 57
\issue 2
\pages 164--173
\mathnet{http://mi.mathnet.ru/tvt11040}
\crossref{https://doi.org/10.1134/S0040364419010319}
\elib{http://elibrary.ru/item.asp?id=37297472}
\transl
\jour High Temperature
\yr 2019
\vol 57
\issue 2
\pages 147--155
\crossref{https://doi.org/10.1134/S0018151X18060147}
\isi{http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&DestLinkType=FullRecord&DestApp=ALL_WOS&KeyUT=000480572900001}
\scopus{http://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-85070710084}


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    Citing articles on Google Scholar: Russian citations, English citations
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    This publication is cited in the following articles:
    1. O. V. Korshunov, V. F. Chinnov, D. I. Kavyrshin, “Highly ionized helium arc plasma. Determination of the temperature in nonequilibrium conditions and the effect of plasma microfields”, High Temperature, 57:3 (2019), 308–315  mathnet  crossref  crossref  isi  elib
  • Teplofizika vysokikh temperatur Teplofizika vysokikh temperatur
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