The electron temperature in the plasma of a DC discharge created in a supersonic airflow

The plasma parameters of a pulsating DC discharge created in a supersonic airflow with a Mach number of M = 2 are determined. It is revealed that along with the intense bands of CN and the molecular nitrogen ion, as well as the spectral lines of atomic oxygen, nitrogen, hydrogen and copper, an inten...

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Bibliographic Details
Published inMoscow University physics bulletin Vol. 72; no. 3; pp. 294 - 300
Main Authors Shibkov, V. M., Shibkova, L. V., Logunov, A. A.
Format Journal Article
LanguageEnglish
Published New York Allerton Press 01.05.2017
Springer Nature B.V
Subjects
Air flow
Atomic oxygen
Chemical Physics
Deceleration
Discharge
Electron energy
Gas temperature
Line spectra
Mach number
Mathematical and Computational Physics
Nitrogen
Physical Kinetics
Physics
Physics and Astronomy
Plasma
Plasma Physics
Plasma radiation
Plasmas (physics)
Theoretical
supersonic airflow
low-temperature plasma
pulsating discharge
bremsstrahlung
electron temperature
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Summary:The plasma parameters of a pulsating DC discharge created in a supersonic airflow with a Mach number of M = 2 are determined. It is revealed that along with the intense bands of CN and the molecular nitrogen ion, as well as the spectral lines of atomic oxygen, nitrogen, hydrogen and copper, an intense continuous spectrum is observed in the spectrum of the gas-discharge plasma radiation, which is caused by the deceleration of electrons on ions. The dependences of the electron temperature on the discharge current and longitudinal coordinates are determined. It was revealed that the studied plasma is nonequilibrium, with the electron temperature being much higher than the gas temperature.
ISSN:0027-1349
1934-8460
DOI:10.3103/S0027134917030109