Using the van der Waals broadening of the spectral atomic lines to measure the gas temperature of an argon microwave plasma at atmospheric pressure

The ro-vibrational emission spectra of the molecular species are usually used to measure the gas temperature of a discharge at atmospheric pressure. However, under some experimental conditions, it is difficult to detect them. In order to overcome this difficulty and obtain the temperature, there are...

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Bibliographic Details
Published in:Spectrochimica acta. Part B: Atomic spectroscopy 2007-02, Vol.62 (2), p.169-176
Main Authors: Yubero, C., Dimitrijević, M.S., García, M.C., Calzada, M.D.
Format: Article
Language:English
Subjects:
Atmospheric pressure
Atomic spectral lines
Gas temperature
Microwave discharges
Plasma spectroscopy
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Summary:The ro-vibrational emission spectra of the molecular species are usually used to measure the gas temperature of a discharge at atmospheric pressure. However, under some experimental conditions, it is difficult to detect them. In order to overcome this difficulty and obtain the temperature, there are methods based on the relation between the gas temperature and the van der Waals broadening of argon atomic spectral lines with a Stark contribution negligible. In this work, we propose a method based on this relation but for lines with a Stark broadening comparable with the van der Waals one.
ISSN:0584-8547
1873-3565
DOI:10.1016/j.sab.2007.02.008