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LINE MIXING COEFFICIENTS IN THE $\nu_{3}$ BAND OF $^{12}CH_{4}$ AND $^{13}CH_{4}$

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/19145

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Title: LINE MIXING COEFFICIENTS IN THE $\nu_{3}$ BAND OF $^{12}CH_{4}$ AND $^{13}CH_{4}$
Creators: Benner, D. Chris; Devi, V. Malathy; Smith, M. A. H.; Rinsland, C. P.; Guelachvili, G.; Brown, L. R.
Issue Date: 1998
Abstract: Over 40 high-resolution absorption spectra of methane as previously $described^{ab}$ were recorded. Included in the spectra recorded at Kitt Peak were room temperature spectra of methane highly enriched in $^{13}CH_{4}$ broadened by air and having a 5 cm path length. All of these spectra were simultaneously $fitted^{c}$ in order to obtain spectral line parameters in the $\nu_{3}$ spectral region of $^{12}CH_{4}$ and $^{13}CH_{4}$. In order to obtain reasonable fits, it was necessary to include line $mixing^{d}$ within the rotational manifolds. Line mixing was only required between spectral lines of the same species of methane. All of the P branch has been measured and measurement of the R branch is in progress. Mixing coefficients for the two isotopes and the two branches will be compared. It was also possible in a few cases to measure the line mixing coefficients between pairs of spectral lines belonging to the $\nu_{2}+\nu_{4}$ band.
URI: http://hdl.handle.net/1811/19145
Other Identifiers: 1998-WF-13
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