Study of the Effect of Pressure Splitting on the Mean Absorption Intensity using an NDIR Gas Analyzer

Tsutomu YONEZAWA

doi:10.2477/jccj.5.219

Journal of Computer Chemistry, Japan

Online ISSN : 1347-3824
Print ISSN : 1347-1767
ISSN-L : 1347-1767

General Papers

Study of the Effect of Pressure Splitting on the Mean Absorption Intensity using an NDIR Gas Analyzer

Tsutomu YONEZAWA

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Keywords: Mean absorption intensity, Two-body impact theory, Pressure splitting of degenerate vibrational -rotational levels, Effect of pressure splitting, Equivalent effective pressure, Elsasser model, Pressure broadening

JOURNAL FREE ACCESS

2006 Volume 5 Issue 4 Pages 219-226

DOI https://doi.org/10.2477/jccj.5.219

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Abstract

In the infrared region, an expression for the mean absorption intensity has been obtained using the Elsasser model based only on the assumption of pressure broadening. Around atmospheric pressure, however, a better interpretation of the empirical results has been found by introducing a new effect of splitting due to the pressure of the degenerate vibrational-rotational levels.

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