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Water vapor line shifts in the range 5000-5600 cm induced by the pressure of different buffer gases

Optics and Spectroscopy (English translation of Optika i Spektroskopiya), ISSN: 0030-400X, Vol: 98, Issue: 6, Page: 830-837
2005
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The coefficients of the water vapor line shifts induced by the pressure of oxygen, nitrogen, and argon are measured and calculated in the spectral range from 5000 to 5600 cm. The experimental data are obtained from the analysis of the absorption spectra of HO-O, H O-N, and HO-Ar mixtures measured on a Fourier spectrometer with a resolution of 0.007 cm in a wide pressure range of buffer gases at room temperature for an optical path length of 84.05 m. The calculations are performed according to the Anderson impact theory of broadening with the use of only one adjustable parameter - the effective mean dipole polarizability of the upper vibrational state. The shifts of one and the same lines induced by the pressure of different buffer gases are compared; the role played by different terms of the intermolecular potential in the formation of the shifts is analyzed. © 2005 Pleiades Publishing, Inc.

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