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Spectral measurements of high temperature isotopic carbon dioxide in the 4.5 micrometer and 2.8 micrometer regions


, : Spectral measurements of high temperature isotopic carbon dioxide in the 4.5 micrometer and 2.8 micrometer regions. Journal of Molecular Spectroscopy 116(2): 351-363

High-resolution measurements have been made using the AFGL 2-m path difference Fourier transform spectrometer on isotopically enriched samples of carbon dioxide. Two regions were investigated: 2140-2320 and 3470-3770 cm-1. The samples were observed in absorption at temperatures up to 800 K. Observed line positions to high rotational levels were obtained for 15 parallel bands with .DELTA.nu.3 = 1 for the isotopic variants 13C16O2, 13C16O18O, and 13C16O17O in the 4.5-.mu.m region and for 23 bands of the type .DELTA.nu.1 = 1, .DELTA.nu.3 = 1 for the species 12C16O2, 12C16O18O, and 12C18O2 in the 2.8-.mu.m region.

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