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Line Assignments and Position Measurements in Several Weak CO2 Bands Between 4590/cm and 7930/cmA substantial set of CO2 spectra from 4500 to 12000/cm has been obtained at Ames with 1500 m path length using a Bomem DA8 FTS. The signal/noise was improved compared to prior spectra obtained in this laboratory by including a filter wheel limiting the band-pass of each spectrum to several hundred per cm. We have measured positions of lines in several weak bands not previously resolved in laboratory spectra. Using our positions and assignments of lines of the Qbranch of the 31103-00001 vibrational band at 4591/cm, we have redetermined the rotational constants for the 31103f levels. Q-branch lines of this band were previously observed, but misassigned, in Venus spectra by Mandin. The current HITRAN values of the rotational constants for this level are incorrect due to the Q-branch misassignments. Our prior measurements of the 21122-00001 vibrational band at 7901/cm were limited to Q-and R-branch lines; with the improved signal/noise of these new spectra we have now measured lines in the weaker P branch. The 21122 (Gv = 790148/cm) levels are known to be perturbed by the 32211 (G(sub v) = 789757/cm) levels; new DND calculations predict that high-J lines of the forbidden 32211-00001 vibrational band 'borrow' intensity from the corresponding transitions of the 21122-00001 band. We have identified such Q- and R-branch transitions of the 32211-00001 band from 26 < J" < 44, based on our position measurements of lines in the 32211-02201 band at 6562/cm.
Document ID
20020051354
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Giver, L. P.
(NASA Ames Research Center Moffett Field, CA United States)
Kshirsagar, R. J.
(NASA Ames Research Center Moffett Field, CA United States)
Freedman, R. C.
(NASA Ames Research Center Moffett Field, CA United States)
Chackerian, C., Jr.
(NASA Ames Research Center Moffett Field, CA United States)
Wattson, R. B.
(Stewart Radiance Lab. Bedford, MA United States)
Gore, Warren J.
Date Acquired
August 20, 2013
Publication Date
January 1, 1998
Subject Category
Solid-State Physics
Meeting Information
Meeting: 53rd Ohio State Univ. Symposium on Molecular Spectroscopy
Location: Columbus, OH
Country: United States
Start Date: June 15, 1998
End Date: June 19, 1998
Sponsors: Ohio State Univ.
Funding Number(s)
PROJECT: RTOP 344-33-50-43
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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