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- Title
Shift of the centers of H<sub>2</sub>O absorption lines in the region of 1.06 μm.
- Authors
Bykov, A. D.; Lavrentieva, N. N.; Petrova, T. M.; Sinitsa, L. N.; Solodov, A. M.; Barber, R.; Tennyson, J.; Tolchenov, R. N.
- Abstract
The shift coefficients for the lines of the ν1 + ν2 + ν3 and ν2 + 2ν3 bands of H2O in the region from 9403 to 9413 cm−1 are measured and calculated. The measurements are performed using an intracavity laser spectrometer based on a neodymium laser with a determination error of the line center of 0.003–0.004 cm−1. The Ar, Kr, and Xe noble gases, as well as nitrogen, oxygen, and hydrogen were used as buffer gases. The coefficients of shifts in eight H2O absorption lines induced by oxygen, nitrogen, and atmospheric air pressures fall into the region from −0.004 to −0.069 cm−1/bar. The calculations are performed by a semiempirical method using variational wave functions, which, in contrast to other studies, correctly takes into account intramolecular interactions. The calculated values agree satisfactorily with experimental data.
- Subjects
ABSORPTION spectra; WATER; LASER spectroscopy; NEODYMIUM glass lasers; PHASE shifters; NITROGEN; OXYGEN; HYDROGEN; MOLECULE-molecule collisions
- Publication
Optics & Spectroscopy, 2008, Vol 105, Issue 1, p25
- ISSN
0030-400X
- Publication type
Article
- DOI
10.1134/S0030400X08070059