Gas temperature determination from doppler-broadened spectral lines with self-absorption

The gas temperature determination from spectral line profiles recorded by means of a Fabry-Perot interferometer requires the deconvolution of the profiles into the influence of the apparatus profile, the natural line broadening and, if the optical thickness of the spectral line is not negligible, se...

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Bibliographic Details
Published in:Physica B + C 1984-01, Vol.124 (1), p.85-90
Main Authors: Behnke, J.F., Scheibner, H., Timmermans, C.J.
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:The gas temperature determination from spectral line profiles recorded by means of a Fabry-Perot interferometer requires the deconvolution of the profiles into the influence of the apparatus profile, the natural line broadening and, if the optical thickness of the spectral line is not negligible, self-absorption. In this paper it is considered that self-absorption is important in a lot of practical cases. Folding integrals for the line profiles are calculated with self-absorption taken into account for optical thickness, values k E from 0.1 up to 10. The theoretical results are compared with experiments in a hollow cathode arc discharge.
ISSN:0378-4363
DOI:10.1016/0378-4363(84)90035-4