Pure Rotational Spectrum of Water Vapor

The pure rotational spectrum of water vapor was measured over the frequency range 5–125 cm−1 at a resolution of approximately 0.07 cm−1. A complete set of energy levels up to J=7 was derived. The ground-state rotational constants were calculated and agree well with those derived from near-infrared d...

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Bibliographic Details
Published in:The Journal of chemical physics 1967-10, Vol.47 (7), p.2454-2461
Main Authors: Hall, Richard T., Dowling, Jerome M.
Format: Article
Language:English
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Summary:The pure rotational spectrum of water vapor was measured over the frequency range 5–125 cm−1 at a resolution of approximately 0.07 cm−1. A complete set of energy levels up to J=7 was derived. The ground-state rotational constants were calculated and agree well with those derived from near-infrared data. The values of the ground-state rotational constants are A0=27.8761±0.0034 cm−1, B0=14.5074±0.0090 cm−1, and C0=9.2877±0.0021 cm−1. The six quartic distortion constants were also determined along with the higher-order distortion constant associated with the a axis of rotation.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.1703330