Fourier transform spectroscopy of CO2 isotopologues at 1.6 μm: Line positions and intensities D. Jacquemart, Y. G. Borkov, O. M. Lyulin [et.al.]
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ArticleSubject(s): углекислый газ | спектральные линии | изотопологиGenre/Form: статьи в журналах Online resources: Click here to access online
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Journal of Quantitative Spectroscopy and Radiative Transfer Vol. 160. P. 1-9Abstract: The line positions and intensities of carbon dioxide isotopologues have been retrieved between 5900 and 6400 cm−1 region from Fourier transform spectra of 17O- and 18O-enriched carbon dioxide recorded in LADIR (Paris, France) with the Bruker IFS 125-HR. In total 1634 line positions and intensities of 20 bands of the 5 major CO2 isotopologues present in our sample 16O12C17O (39.48%), 17O12C17O (27.73%), 16O12C16O (15.20%), 16O12C18O (7.32%) and 17O12C18O (8.25%) are retrieved. All studied bands belong to the ΔP =8 (only for asymmetric species) and 9 series of transitions, where P=2V1+V2+3V3P=2V1+V2+3V3 is the polyad number (Vi are vibrational quantum numbers). The accuracy of the line position determination is about 0.3×10−3 cm−1 for the unblended and not very weak lines and the accuracy for the line intensities varies from 4% to 30% depending on the intensity of the line and on the extent of the line overlapping. For the 16O12C17O, 17O12C17O, 16O12C18O and 17O12C18O isotopologues the systematic comparisons have been performed with the recent CRDS measurements.
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The line positions and intensities of carbon dioxide isotopologues have been retrieved between 5900 and 6400 cm−1 region from Fourier transform spectra of 17O- and 18O-enriched carbon dioxide recorded in LADIR (Paris, France) with the Bruker IFS 125-HR. In total 1634 line positions and intensities of 20 bands of the 5 major CO2 isotopologues present in our sample 16O12C17O (39.48%), 17O12C17O (27.73%), 16O12C16O (15.20%), 16O12C18O (7.32%) and 17O12C18O (8.25%) are retrieved. All studied bands belong to the ΔP =8 (only for asymmetric species) and 9 series of transitions, where P=2V1+V2+3V3P=2V1+V2+3V3 is the polyad number (Vi are vibrational quantum numbers). The accuracy of the line position determination is about 0.3×10−3 cm−1 for the unblended and not very weak lines and the accuracy for the line intensities varies from 4% to 30% depending on the intensity of the line and on the extent of the line overlapping. For the 16O12C17O, 17O12C17O, 16O12C18O and 17O12C18O isotopologues the systematic comparisons have been performed with the recent CRDS measurements.
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