LINE SHIFT AND LINE BROADENING IN FUNDAMENTAL BANDS OF DIFFERENT ISOTOPOMERS OF CARBON MONOXIDE
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Date
1997
Journal Title
Journal ISSN
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Publisher
Ohio State University
Abstract
In this paper we present results concerning line shift and line broadening in the fundamental band of different isotopomeres of carbon monoxide near $2058 cm^{-1}$. The study includes lines of ${^{12}}CO$ and for the first time lines of ${^{13}}CO, \ {^{13}}C^{18}O, \ {^{13}}C^{18}O$, and ${^{13}}C^{17}O$ perturbed by $N_{2}, O_{2}, H_{2}, D_{2}, He, Ne, Ar, $Kr, and Xe. The results for $Kr, H_{2}$, and $D_{2}$ represent the first experimental data for the $(1 \leftarrow 0)$ band of CO. For all perturbers except helium all line-shift coefficients are negative. Within the experimental uncertainties the data show no significant dependence on the isotopomere. As Known for ${^{12}}CO$ for collisions with noble gases the absolute value of the line-shift coefficients increase with increasing mass of the perturber. Lines from R-branches show smaller shift coefficients compared to P-branch lines. Our absolute values for the line-shift coefficients for the $(1 \leftarrow 0)$ band confirm the trend that the effect for this band is smaller compared to the $(2 \leftarrow 0)$ band as known from former experimental data by Bouanich $et al^{h}$. The nitrogen broadening will be compared to previous measurements for ${^{13}}CO$ by Voigt $et al^{i}$.
Description
$^{h}$J.-P. Bouanich, D. Bermejo, J.L. Domenech, R.Z. Martinez, J. Mol. Spectrose. 179,22 (1996) $^{i}$S. Voigt, S. Dreher, J. Orphal, J. P. Burrows, J. Mol. Spectrose. 180, 359 (1996)
Author Institution: Institute of environmental Physics, University of Bremen; Institute of Optics, Technical University Berlin
Author Institution: Institute of environmental Physics, University of Bremen; Institute of Optics, Technical University Berlin