Temperature measurements by coherent Rayleigh scattering

We demonstrate, for the first time to our knowledge, the utility of coherent Rayleigh scattering (CRS) for temperature measurements in low-density gases and weakly ionized plasmas by measuring the translational temperature of neutral argon in a glow discharge. By analysis of the near-Gaussian spectr...

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Bibliographic Details
Published inOptics letters Vol. 27; no. 3; p. 161
Main Authors Pan, Xingguo, Barker, Peter F, Meschanov, A, Grinstead, J H, Shneider, Mikhail N, Miles, Richard B
Format Journal Article
LanguageEnglish
Published United States 01.02.2002
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Summary:We demonstrate, for the first time to our knowledge, the utility of coherent Rayleigh scattering (CRS) for temperature measurements in low-density gases and weakly ionized plasmas by measuring the translational temperature of neutral argon in a glow discharge. By analysis of the near-Gaussian spectral profile of the CRS signal, we determine temperatures with an uncertainty of </=3%. We also investigate the intensity range over which this simple Gaussian analysis can be used for temperature measurements and discuss its potential for gas diagnostics.
ISSN:0146-9592
DOI:10.1364/OL.27.000161