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Probe measurements of plasma parameters in torch plasmatron

  • Plasma Investigations
  • Published:
High Temperature Aims and scope

Abstract

An electric probe for a torch plasmatron has been manufactured so that to match physical parameters for a descent spacecraft at the Earth atmosphere. There is no material able to bear temperatures 5000–8000 K for long, so the probe has been made of refractory metals in a ceramic shell and it has been used as a measuring unit for a short time, with its metal part and ceramic shell being collapsed simultaneously. The experimental measurement of plasma electro-conductivity is performed with the double probe inside a torch plasmatron. The oscillograms for electric current and voltage are obtained, the volt-ampere characteristics of various plasmas (nitrogen and argon) are plotted, the plasma electro-conductivity is experimentally determined and numerically calculated.

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Authors and Affiliations

  1. Joint Institute for High Temperatures RAS, Moscow, Russia

    A. S. Savelev & E. E. Son

  2. Moscow Institute of Physics and Technology, Dolgoprudny, Moscow oblast, Russia

    V. P. Konovalov, A. S. Savelev & E. E. Son

Authors
  1. V. P. Konovalov
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  2. A. S. Savelev
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  3. E. E. Son
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Correspondence to E. E. Son.

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Konovalov, V.P., Savelev, A.S. & Son, E.E. Probe measurements of plasma parameters in torch plasmatron. High Temp 52, 145–149 (2014). https://doi.org/10.1134/S0018151X14070013

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  • DOI: https://doi.org/10.1134/S0018151X14070013

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