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Line positions and energy levels of the O substitutions from the HDO/D2O spectra between 5600 and 8800 cm |
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| Authors: | SN Mikhailenko SA Tashkun A Jenouvrier S Fally |
| Institution: | a Laboratory of Theoretical Spectroscopy, V.E. Zuev Institute of Atmospheric Optics SB RAS, 1, Akademicheskii Av., 634055 Tomsk, Russia b Groupe de Spectrométrie Moléculaire et Atmosphérique, UMR CNRS 6089, Université de Reims-Champagne-Ardenne, UFR Sciences BP 1039, 51687 Reims Cedex 2, France c Université Libre de Bruxelles, Faculté des Sciences, Service de Chimie Quantique et Photophysique, Brussels, Belgium d Belgian Institute for Space Aeronomy, Brussels, Belgium |
| Abstract: | Absorption spectra of HDO/D2O mixtures recorded in the 5600-8800 cm−1 region with a total pressure of water from 13 up to 18 hPa and an absorption path length of 600 m have been analyzed in order to obtain new spectroscopic data for HD18O and D218O. In spite of the low natural 18O concentration (about 2×10−3 with respect to the 16O one), about 1100 transitions belonging to HD18O and more than 280 transitions belonging to D218O have been assigned. Most of the D218O transitions belong to the ν1+ν2+ν3 and 2ν1+ν3 bands. Sets of energy levels for seven vibrational states of D218O and four states of HD18O are reported for the first time. The comparison of the experimental data with the calculated values based on Partridge-Schwenke global variational calculations is discussed. |
| Keywords: | Fourier transform spectroscopy Infrared absorption D218O and HD18O molecules Line positions Energy levels |
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