Resonance functions in the theory of collisional broadening of molecule spectral lines for low temperatures
V.I. Starikov1,2
1Tomsk State University of Control Systems and Radioelectronics, 634050, 40 Lenina Prospect, Tomsk, Russia
2National Research Tomsk Polytechnic University, 30, Lenin Avenue, Tomsk, 634050, Russia
Keywords: столкновительное уширение, резонансные функции, низкие температуры, collisional broadening, resonance functions, low temperatures
Abstract
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 , ) written as a series in Legendre functions. The functions are presented in the analytical form. The calculations of the broadening coefficients g 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 g( 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.
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