HDO and D2O Low Pressure, Long Path Spectra in the 600–3100 cm−1Region: I. HDO Line Positions and Strengths
✍ Scribed by Robert A. Toth
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 908 KB
- Volume
- 195
- Category
- Article
- ISSN
- 0022-2852
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✦ Synopsis
High-resolution spectra of gas mixtures of HDO, D 2 O, and H 2 O were obtained with a Fourier-transform spectrometer with path lengths up to 433 m. The spectra were analyzed to obtain line positions and strengths of over 6000 transitions of HDO and D 2 O. For HDO, these included the (000)-( 000), ( 020)-( 010), and ( 100)-( 010) bands of HD 16 O and the ( 010)-( 000) bands of HD 16 O, HD 17 O, and HD 18 O. Several of these assignments are reported for the first time. Of interest was the extended coverage of the A-type transitions of the ( 010)-( 000) band of HD 16 O. This is the only A-type infrared band of any of the water vapor species (HDO, D 2 O, and H 2 O) that is not involved in interactions with other bands. By this token, the A-type dipole-moment expansion matrix elements can be tested without involving perturbation theory. The measured linestrengths of the interacting bands, ( 020)-( 010) and ( 100)-( 010), were analyzed using a full perturbation treatment. Strong localized Coriolis interactions affected only a few observed transitions.