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$N_{2}$ AND Ar BROADENING OF THE P AND R BRANCHES OF THE $\nu_{3}$ BAND OF METHANE

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Title: $N_{2}$ AND Ar BROADENING OF THE P AND R BRANCHES OF THE $\nu_{3}$ BAND OF METHANE
Creators: Pine, A. S.
Issue Date: 1995
Publisher: Ohio State University
Abstract: We have recorded ${N_{2}}{-}$ and Ar-broadened spectra of the allowed P-and branch manifolds for $J \leq 10$ in the $\nu_{3}$ band of $CH_{4}$ from the Doppler limit to $\sim 67 kPa at T = 295 K$ using a tunable difference-frequency laser spectrometer. The broadening coefficients and shifts and Dicke narrowing will be compared with prior laser measurements in the Q branch of this $band^{1}$ as well as previous FTIR measurements in the P and R $branches^{2}$. We will also address the question of line mixing between the overlapping tetrahedral components in a given blended J manifold as reported by the NASA Langley $group^{3}$.
Description: 1. A.S. Pine, J. Chem. Phys. 97, 773 (1992). 2. D.C. Benner, V.M. Devi, M.A.H. Smith and C.P. Rinsland, JQSRT 50, 65 (1993). 3. D.C. Benner et al., Columbus Symposium, June 1994, paper, ME 12.
Author Institution: National Institute of Standards and Technology, Gaithersburg, MD 20899.
URI: http://hdl.handle.net/1811/29725
Other Identifiers: 1995-RL-12
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