He-broadening and shift coefficients of water vapor lines in infrared spectral region

T. M. Petrova; A. M. Solodov; A. A. Solodov; V. M. Deichuli; V. I. Starikov

doi:10.1117/12.2205562

19 November 2015 He-broadening and shift coefficients of water vapor lines in infrared spectral region

T. M. Petrova, A. M. Solodov, A. A. Solodov, V. M. Deichuli, V. I. Starikov

Proceedings Volume 9680, 21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics; 96800E (2015) https://doi.org/10.1117/12.2205562
Event: XXI International Symposium Atmospheric and Ocean Optics. Atmospheric Physics, 2015, Tomsk, Russian Federation

Abstract

The water vapor line broadening and shift coefficients in the ν₁+ν₂, ν₂+ν₃, ν₁+ν₃, 2ν₃, 2ν₁, 2ν₂+ν₃, and ν₁+2ν₂ vibrational bands induced by helium pressure were measured using a Bruker IFS 125HR spectrometer. The vibrational bands 2ν₃ and ν₁+2ν₂ were investigated for the first time. The interaction potential used in the calculations of broadening and shift coefficients was chosen as the sum of pair potentials, which were modeled by the Lennard-Jones (6-12) potentials. The vibrational and rotational contributions to this potential were obtained by use of the intermolecular potential parameters and intramolecular parameters of H₂O molecule. The calculated values of the broadening and shift coefficients were compared with the experimental data.

Citation Download Citation

T. M. Petrova, A. M. Solodov, A. A. Solodov, V. M. Deichuli, and V. I. Starikov "He-broadening and shift coefficients of water vapor lines in infrared spectral region ", Proc. SPIE 9680, 21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics, 96800E (19 November 2015); https://doi.org/10.1117/12.2205562

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