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.
Original language | English |
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Pages (from-to) | 316-323 |
Number of pages | 8 |
Journal | Atmospheric and Oceanic Optics |
Volume | 30 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1 Jul 2017 |
Keywords
- collisional broadening
- low temperatures
- resonance functions
ASJC Scopus subject areas
- Oceanography
- Atomic and Molecular Physics, and Optics
- Earth-Surface Processes
- Atmospheric Science