Abstract
The water vapor line broadening γ and shift δ coefficients in the ν1 + ν2, ν2 + ν3, ν1 + ν3, 2ν3, 2ν1, 2ν2 + ν3, and ν1 + 2ν2 vibrational bands were obtained from the analysis of the H2O-He absorption spectra, recorded in the region from 5000 to 7500 cm-1 with the spectral resolution of 0.01 cm-1 using a Bruker IFS 125HR FTIR spectrometer. The vibrational bands 2ν3 and ν1 + 2ν2 were investigated for the first time. The calculations of γ and δ were performed in the framework of the semi-classical method. The rotational contributions as well as the contributions connected with the accidental resonances were taken into account in the used H2O-He interaction potential. The analytical representation of the broadening coefficients γ at planetary temperatures was introduced and discussed.
Original language | English |
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Pages (from-to) | 50-58 |
Number of pages | 9 |
Journal | Journal of Molecular Spectroscopy |
Volume | 321 |
DOIs | |
Publication status | Published - 1 Mar 2016 |
Keywords
- Fourier transform spectroscopy
- Intermolecular potential
- Line broadening and shift coefficients
- Semiclassical method
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Spectroscopy
- Physical and Theoretical Chemistry