Abstract
Eleven resonance functions are calculated in the exact trajectory model, which can be used for calculation of broadening coefficients γ of molecular lines during interactions with atoms of inert gases at very low temperatures. These functions correspond to the atom-atom potential and the potential V(R, θ) written in terms of Legendre polynomials. The functions are represented in analytical form. The broadening coefficients γ are calculated for absorption lines of CO perturbed by He and Ar at temperatures T from 300 to 2 K using the potential V(R, θ). It is shown that the dependence γ(T) for low temperatures T is determined by the potential well depth. For the CO–He system, a comparison with the experimental data is performed.
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Original Russian Text © V.I. Starikov, 2017, published in Optika Atmosfery i Okeana.
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Starikov, V.I. Resonance functions in the theory of collisional broadening of molecule spectral lines at low temperatures. Atmos Ocean Opt 30, 316–323 (2017). https://doi.org/10.1134/S102485601704011X
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DOI: https://doi.org/10.1134/S102485601704011X