Vol. 30, issue 02, article # 2

Starikov V. I. Resonance functions in the theory of collisional broadening of molecule spectral lines for low temperatures. // Optika Atmosfery i Okeana. 2017. V. 30. No. 02. P. 115-123. DOI: 10.15372/AOO20170202 [in Russian].
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Eleven resonance functions of the theory of the broadening of molecular lines by foreign atomic gases are calculated for very low temperatures. These functions correspond to the atom-atom potential and to the potential V(R, θ) written as a series in Legendre functions. The functions are presented in the analytical form. The calculations of the broadening coefficients γ are performed for the CO lines perturbed by the He and Ar for the temperatures T from 300 to 2 K. It is shown that the dependence γ(T) for low temperatures T is determined by the deep of the potential. For CO–He system the comparison with the experimental data is presented.


collisional broadening, resonance functions, low temperatures


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