A method for observing changes in radiative losses from an inductively coupled argon plasma

An experimental method is developed that permits the observation of changes in radiative losses from a low temperature inductively coupled atmospheric pressure argon plasma. It is then used to demonstrate that as a plasma deviates from excitational equilibrium, radiative losses from the near-infrare...

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Bibliographic Details
Published in:Spectrochimica acta. Part B: Atomic spectroscopy 1991, Vol.46 (9), p.1253-1262
Main Author: Miller, G.P.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Plasma diagnostic techniques and instrumentation
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Summary:An experimental method is developed that permits the observation of changes in radiative losses from a low temperature inductively coupled atmospheric pressure argon plasma. It is then used to demonstrate that as a plasma deviates from excitational equilibrium, radiative losses from the near-infrared 4 s- p transition array increase. In particular, the 811.5 nm Ar I spectral line is shown to move from being trapped to being near-opticaily thin upon the introduction of an aerosol flow of argon through the center of the discharge.
ISSN:0584-8547
1873-3565
DOI:10.1016/0584-8547(91)80121-I