Parameters of a Subthreshold Microwave Discharge in Air and Carbon Dioxide as a Function of Microwave Field at Different Gas Pressures

Propagation velocity of a subthreshold microwave discharge in air and carbon dioxide is measured at various gas pressures and intensities of microwave radiation. At air pressures of 200, 390, and 738 Torr and carbon dioxide pressures of 390 and 750 Torr, the propagation velocity of the head part of...

Full description

Saved in:
Bibliographic Details
Published in:Plasma physics reports 2020-09, Vol.46 (9), p.927-935
Main Authors: Artem’ev, K. V., Batanov, G. M., Berezhetskaya, N. K., Borzosekov, V. D., Davydov, A. M., Kolik, L. V., Konchekov, E. M., Kossyi, I. A., Petrov, A. E., Sarksyan, K. A., Stepakhin, V. D., Kharchev, N. K.
Format: Article
Language:English
Subjects:
Atomic
Carbon dioxide
Gas density
Interaction of Waves with Plasma
Microwave discharge
Molecular
Optical and Plasma Physics
Physics
Physics and Astronomy
Propagation
Propagation velocity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Propagation velocity of a subthreshold microwave discharge in air and carbon dioxide is measured at various gas pressures and intensities of microwave radiation. At air pressures of 200, 390, and 738 Torr and carbon dioxide pressures of 390 and 750 Torr, the propagation velocity of the head part of the self-non-self-sustained discharge closely follows a quadratic power law as a function of microwave-beam intensity in the range from 4 to 16 kW/cm 2 , while decreasing directly proportional to the initial gas density. In the process, the discharge propagation velocities in carbon dioxide are twice lower that those in air at equal intensities of the microwave radiation. The temperature in the head part of the discharge in air reaches 3.5–5.5 kK, while that in carbon dioxide reaches 9–15 kK.
ISSN:1063-780X
1562-6938
DOI:10.1134/S1063780X20090019