Measurements of collisional broadening coefficients by infrared polarization spectroscopy

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Measurements of collisional broadening coefficients by infrared polarization spectroscopy. / Alwahabi, Z. T.; Zetterberg, Johan; Li, Zhongshan; Aldén, Marcus.

In: Applied Spectroscopy, Vol. 61, No. 4, 2007, p. 424-427.

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TY - JOUR

T1 - Measurements of collisional broadening coefficients by infrared polarization spectroscopy

AU - Alwahabi, Z. T.

AU - Zetterberg, Johan

AU - Li, Zhongshan

AU - Aldén, Marcus

PY - 2007

Y1 - 2007

N2 - 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.

AB - 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.

KW - collisional broadening

KW - polarization spectroscopy

KW - CO2

KW - line shape

U2 - 10.1366/000370207780466163

DO - 10.1366/000370207780466163

M3 - Article

VL - 61

SP - 424

EP - 427

JO - Applied Spectroscopy

JF - Applied Spectroscopy

SN - 1943-3530

IS - 4

ER -