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Absorption spectrum of carbon dioxide at 4.3 μm
Authors:A. Baldacci  V. Malathy Devi  Da-Wun Chen  K. Narahari Rao  B. Fridovich
Affiliation:Department of Physics, The Ohio State University, Columbus, Ohio 43210 USA;National Oceanic and Atmospheric Administration, National Environmental Satellite Service, Washington, D.C. 20233 USA
Abstract:The absorption spectrum of carbon dioxide has been recorded in the wavenumber region 2395-2216 cm?1 with a spectral resolution between 0.02 and 0.03 cm?1. About twenty transitions have been identified and the molecular constants of the levels involved have been evaluated. In view of the interest of this region in atmospheric studies a map of the entire spectrum recorded by using a normal sample of carbon dioxide is presented including the identifications for the different bands. About 90% of the lines observed have been interpreted. Some of them have been assigned to transitions originating from higher excited states of 12C16O2 not considered before in interpreting this spectral region. For the first time, bands of 12C16O17O have been identified in the 4.3-μm spectra obtained with the natural sample.
Keywords:Author to whom correspondence should be addressed.
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