Publication Abstracts
Gamache and Lynch 2000
Gamache, R.R., and R. Lynch, 2000: Argon-induced halfwidths and line shifts of water vapor transitions. J. Quant. Spectrosc. Radiat. Transfer, 64, 439-456, doi:10.1016/S0022-4073(99)00101-6.
Pressure-broadened halfwidths and pressure-induced line shifts are determined for water vapor transitions with argon as the perturbing gas. Calculations based on the complex Robert-Bonamy (CRB) formalism are made for a number of vibrational bands, for which there are experimental data to compare with. The intermolecular potential is taken as a sum of Lennard-Jones (6-12) atom-atom, isotropic induction, and dispersion components. The dynamics of the collision process are correct to second order in time. The calculations demonstrate that the atom-atom potential for this system should be expanded to 12th order. A new feature in the CRB approach is that the real and imaginary components of the Liouville S matrix affect both the halfwidth and the line shift. It is shown here that the imaginary parts of the S matrix strongly affect the calculated H2O-Ar halfwidths. The calculated values are compared with those obtained in a number of experimental studies. In general, good agreement is observed between the CRB calculations and the measured values for both halfwidths and line shifts. It is also clear that some parameters describing the intermolecular potential need to be better determined.
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BibTeX Citation
@article{ga08000d,
author={Gamache, R. R. and Lynch, R.},
title={Argon-induced halfwidths and line shifts of water vapor transitions},
year={2000},
journal={Journal of Quantitative Spectroscopy and Radiative Transfer},
volume={64},
pages={439--456},
doi={10.1016/S0022-4073(99)00101-6},
}
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RIS Citation
TY - JOUR ID - ga08000d AU - Gamache, R. R. AU - Lynch, R. PY - 2000 TI - Argon-induced halfwidths and line shifts of water vapor transitions JA - J. Quant. Spectrosc. Radiat. Transfer JO - Journal of Quantitative Spectroscopy and Radiative Transfer VL - 64 SP - 439 EP - 456 DO - 10.1016/S0022-4073(99)00101-6 ER -
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