Technical Physics Letters

, Volume 44, Issue 9, pp 841–843 | Cite as

Spatial Distribution of Gas Temperature in an Air Plasma Jet of Direct Current Glow Microdischarge

  • O. M. Stepanova
  • A. V. Kazak
  • A. M. Astafiev
  • M. E. PinchukEmail author
  • L. V. Simonchik


The spatial distribution of gas temperature in air plasma jet of dc glow microdischarge has been determined. The temperature field was measured by a thermocouple probe and compared to schlieren images. The jet can be separated in the radial direction into three characteristic regions with clearly pronounced boundaries. The central region represents a narrow hot zone corresponding to the visible plasma plume, in which the gas temperature varies from 50 to 200°C depending on the air flow rate and distance from the anode. This zone is surrounded by a warm “coat” of ~1-cm diameter and a temperature within 30–50°C. The outer region represented ambient air at room temperature. The zone of temperatures above 50°C did not extend to a distance above 3 cm from the output nozzle of the discharge cell.


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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • O. M. Stepanova
    • 1
    • 2
  • A. V. Kazak
    • 3
  • A. M. Astafiev
    • 1
    • 2
  • M. E. Pinchuk
    • 1
    • 2
    Email author
  • L. V. Simonchik
    • 3
  1. 1.St. Petersburg State UniversitySt. PetersburgRussia
  2. 2.Institute for Electrophysics and Electric PowerRussian Academy of SciencesSt. PetersburgRussia
  3. 3.B.I. Stepanov Institute of PhysicsNational Academy of Sciences of BelarusMinskBelarus

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