Absorption Spectrum of H2O in the Range 12 400-14 520 cm |
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Authors: | Mizuho TanakaJames W Brault Jonathan Tennyson |
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Institution: | a Department of Physics and Astronomy, University College London, London, WC1E 6BT, United Kingdomb LASP (Space Technology Building), 1234 Innovation Drive, Boulder, Colorado, 80303-7814c Department of Physics and Astronomy, University College London, London, WC1E 6BT, United Kingdomf1j.tennyson@ucl.ac.ukf1 |
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Abstract: | Fourier transform spectra recorded using (a) natural abundance water vapor, (b) H218O-enriched water vapor, and (c) H217O-enriched water vapor are analyzed. The ratio of intensities in three spectra is used to identify 927 lines due to absorption by H218O. Intensities and self-broadening parameters are derived for these lines. Using theoretical linelists, comparisons with previously assigned H216O spectra, and automatic searches for combination differences, 747 lines are assigned. These lines belong to 14 vibrational states in the 3ν+δ and 4ν polyads. Newly determined H218O vibrational band origins include 4ν1 at 13 793.09 cm−1, 3ν1+ν3 at 13 795.40 cm−1, 2ν1+2ν3 at 14 188.82 cm−1, ν1+3ν3 at 14 276.34 cm−1, and 2ν2+2ν2+ν3 at 13 612.71 cm−1. These results are compared with data in HITRAN. |
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