Resonance functions in the theory of collisional broadening of molecule spectral lines at low temperatures

V. I. Starikov

    Research output: Contribution to journal › Article

    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 languageEnglish
    Pages (from-to)316-323
    Number of pages8
    JournalAtmospheric and Oceanic Optics
    Volume30
    Issue number4
    DOIs
    Publication statusPublished - 1 Jul 2017

    Fingerprint

    line spectra
    molecules
    trajectory
    atoms
    well
    Legendre functions
    coefficients
    gas
    rare gases
    temperature
    trajectories
    interactions
    comparison
    calculation

    Keywords

    • collisional broadening
    • low temperatures
    • resonance functions

    ASJC Scopus subject areas

    • Oceanography
    • Atomic and Molecular Physics, and Optics
    • Earth-Surface Processes
    • Atmospheric Science

    Cite this

    Resonance functions in the theory of collisional broadening of molecule spectral lines at low temperatures. / Starikov, V. I.

    In: Atmospheric and Oceanic Optics, Vol. 30, No. 4, 01.07.2017, p. 316-323.

    Research output: Contribution to journal › Article

    Starikov, VI 2017, 'Resonance functions in the theory of collisional broadening of molecule spectral lines at low temperatures', Atmospheric and Oceanic Optics, vol. 30, no. 4, pp. 316-323. https://doi.org/10.1134/S102485601704011X
    Starikov VI. Resonance functions in the theory of collisional broadening of molecule spectral lines at low temperatures. Atmospheric and Oceanic Optics. 2017 Jul 1;30(4):316-323. https://doi.org/10.1134/S102485601704011X
    Starikov, V. I. / Resonance functions in the theory of collisional broadening of molecule spectral lines at low temperatures. In: Atmospheric and Oceanic Optics. 2017 ; Vol. 30, No. 4. pp. 316-323.
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