Open AccessEmission spectrum analysis of an atmospheric electrode microwave discharge in argon flow and of a cold plasma jet on its base
Author(s) -
С. Н. Антипов,
M. A. Sargsyan,
M. Kh. Gadzhiev
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1698/1/012029
Subject(s) - plasma torch , argon , plasmatron , electrode , plasma , jet (fluid) , emission spectrum , atomic physics , analytical chemistry (journal) , microwave , spectral line , vibrational temperature , materials science , atmospheric pressure , electric arc , dielectric barrier discharge , chemistry , excited state , physics , quantum mechanics , astronomy , chromatography , meteorology , thermodynamics
The measurements and analysis of the emission spectra both of atmospheric-pressure electrode microwave discharge in argon flow and cold plasma jet induced by the discharge are conducted. We used experimental setup based on the previously developed multipurpose 2.45-Hz-plasmatron with the external portable discharge chamber (plasma torch) with the outlet of 2.5 cm in diameter and power of about several hundred watts. Discharge chamber has 6 rod-like electrodes which form a regular hexagon in a cross section of the torch. Discharge channels are formed between the ends of the electrodes and the inner wall of the chamber. Molecular bands of NO, OH, N 2 , NH and atomic lines of Ar were found in the spectrum of the discharge channels. Based on the analysis of the spectra, it was shown that the gas temperature in the discharge channel was about 1200 K. In the cold plasma jet spectrum, due to its weak luminescence, only the molecular lines OH and N 2 were reliably observed.