This article is cited in 4 papers

Spatial distribution of gas temperature in an air plasma jet of direct current glow microdischarge

O. M. Stepanova^ab, A. V. Kazak^c, A. M. Astafiev^ab, M. È. Pinchuk^ab, L. V. Simonchik<sup>c

a</sup> Saint Petersburg State University
^b Institute of Problems of Electrophysics of the Russian Academy of Sciences, St. Petersburg
^c B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk

Abstract: 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$^{\circ}$C depending on the air flow rate and distance from the anode. This zone is surrounded by a warm “coat” of $\sim$1-cm diameter and a temperature within 30–50$^{\circ}$C. The outer region represented ambient air at room temperature. The zone of temperatures above 50$^{\circ}$C did not extend to a distance above 3 cm from the output nozzle of the discharge cell.

Received: 15.01.2018

DOI: 10.21883/PJTF.2018.18.46615.17210

 English version: Technical Physics Letters, 2018, 44:9, 841–843

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