Line Shift Investigations for Different Isotopomers of Carbon Monoxide |
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Authors: | B Sumpf JP Burrows A Kissel H-D Kronfeldt O Kurtz I Meusel J Orphal S Voigt |
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Institution: | aOptisches Institut der Technischen Universität Berlin, Sekretariat PN 0–1, Hardenbergstr. 36, 10623, Berlin, Germany;bInstitut für Umweltphysik, Universität Bremen, P.O. Box 330440, 28334, Bremen, Germany |
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Abstract: | Line shift coefficients for five lines of five different isotopomers in the fundamental band of CO in the spectral region near 2058 cm−1were measured using a three channel lead salt diode laser spectrometer. The study includes the linesP(3) of13C17O,R(3) of13C18O,P(9) of12C18O,P(10) of13C16O, andP(21) of12C16O, and covers collisions with N2, O2, H2, D2, He, Ne, Ar, Kr, and Xe. Line shifts of the isotopomers13C16O,12C18O,13C18O, and13C17O were determined for the first time. Within the experimental uncertainty no significant dependence of the shift effect on the isotopomer was found. TheR-branch line under study shows a smaller line shift coefficient than aP-branch line with a similar rotational quantum number. With increasing mass of the noble gas perturber the absolute size of the shift coefficient increases. Moreover self- and nitrogen-broadening coefficients for the isotopomer lines were determined. Compared to previous measurements no significant deviations between different isotopomers were observed. |
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