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Measurements of collisional broadening coefficients by infrared polarization spectroscopy

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Author

Summary, in English

We present measurements of collisional broadening coefficients, obtained at atmospheric pressure, by polarization spectroscopy. Using tunable single mode laser radiation at similar to 2 pro, high-resolution infrared polarization spectra were recorded for CO2-Ar and CO2-He binary mixtures. The recorded polarization spectra were fitted with a Lorentzian cubed function form to obtain the broadening coefficients. The full-width at half-maxima (FWHM) collisional broadening rates of CO2 by Ar and He, for the R14 (12(0)1 <- 00(0)0) line, have been determined to be 0.161 +/- 0.018 cm(-1) atm(-1) and 0.1823 +/- 0.0032 cm(-1) atm(-1), respectively.

Department/s

Publishing year

2007

Language

English

Pages

424-427

Publication/Series

Applied Spectroscopy

Volume

61

Issue

4

Document type

Journal article

Publisher

Society for Applied Spectroscopy

Topic

  • Atom and Molecular Physics and Optics

Keywords

  • collisional broadening
  • polarization spectroscopy
  • CO2
  • line shape

Status

Published

ISBN/ISSN/Other

  • ISSN: 1943-3530