Journal article
In situ gas temperature measurements by UV-absorption spectroscopy
The absorption spectrum of the NO A(2)Sigma(+) <- X(2)Pi gamma-system can be used for in situ evaluation of gas temperature. Experiments were performed with a newly developed atmospheric-pressure high-temperature flow gas cell at highly uniform and stable gas temperatures over a 0.533 m path in the range from 23 degrees C to 1,500 degrees C.
The gas temperature was evaluated (1) from the analysis of the structure of selected NO high-resolution gamma-absorption bands and (2) from the analysis of vibrational distribution in the NO gamma-absorption system in the (211-238) nm spectral range. The accuracy of both methods is discussed. Validation of the classical Lambert-Beer law has been demonstrated at NO concentrations up to 500 ppm and gas temperatures up to 1,500 degrees C over an optical absorption path length of 0.533 m.
Language: | English |
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Publisher: | Springer US |
Year: | 2009 |
Pages: | 265-275 |
Journal subtitle: | Journal of Thermophysical Properties and Thermophysics and Its Applications |
ISSN: | 15729567 and 0195928x |
Types: | Journal article |
DOI: | 10.1007/s10765-008-0438-5 |
ORCIDs: | Fateev, Alexander and Clausen, Sønnik |