Analysis of the CH3D Nonad from 2000 to 3300 cm |
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| Authors: | A NikitinLR Brown L FéjardJP Champion VlG Tyuterev |
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| Institution: | a Laboratory of Theoretical Spectroscopy, Institute of Atmospheric Optics, Russian Academy of Sciences, Tomsk, 634055, Russiab Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California, 91109c Laboratoire de Physique (U.M.R. C.N.R.S. n° 5027), Université de Bourgogne, 9 Avenue A. Savary, Dijon, B.P. 47870-21078, Franced Laboratoire de Physique (U.M.R. C.N.R.S. n° 5027), Université de Bourgogne, 9 Avenue A. Savary, Dijon, B.P. 47870-21078, Francef1Jean-Paul.Champion@u-bourgogne.frf1e Laboratoire de Spectroscopie Moléculaire Atmosphérique (U.M.R. C.N.R.S. n° 6089), Université de Reims, Reims, B.P. 1039-21078, France |
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| Abstract: | As part of the simultaneous analysis of line positions and intensities of the first two polyads of monodeuterated methane, the results achieved for the region 3-5 μm are reported. It involves the three highest fundamentals, (ν1, ν2, ν4), overlapped by overtone (2ν3, 2ν5, 2ν6) and combination (ν3+ν6, ν3+ν5, ν5+ν6) bands. The theoretical model was based on the global tensorial model implemented in the MIRS package. Some 10 000 line positions and 2400 line intensities have been modeled to ±0.000 88 cm−1 and ±3.6% respectively, using measurements obtained at 0.0056 and 0.011 cm−1 resolution with the Fourier transform spectrometer at National Solar Observatory located at Kitt Peak. The strongest band in this polyad is ν4(E) at 3016.7 cm−1 with a strength of 6.3×10−18 cm−1/(molecule cm−2) at 296 K; the weakest band is 2ν3(E) at 2597.7 cm−1 with a strength of 1.9×10−20 cm−1/(molecule cm−2) at 296 K. The total calculated absorption arising from the CH3D nonad is 8.95×10−18 cm−1/(molecule cm−2) at 296 K. |
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| Keywords: | monodeuterated methane |
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