Broadening and collisional interference of lines in the ir spectra of ammonia

Self-broadening in the ν2 band

M. R. Cherkasov

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    The relaxation parameters of lines of the P, Q, and R branches of the ammonia ν2 band are calculated in the case of self-broadening with the effects of collisional interference of doublet components taken into account. It is shown that the cross-relaxation parameters do not exceed, as a rule, several percent of the values of the self-broadening coefficients and, consequently, the isolated line approximation is applicable in a wide pressure range. The calculated results are compared with experimental data.

    Original languageEnglish
    Pages (from-to)835-847
    Number of pages13
    JournalOptics and Spectroscopy (English translation of Optika i Spektroskopiya)
    Volume120
    Issue number6
    DOIs
    Publication statusPublished - 1 Jun 2016

    Fingerprint

    Ammonia
    ammonia
    interference
    cross relaxation
    coefficients
    approximation

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics

    Cite this

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    abstract = "The relaxation parameters of lines of the P, Q, and R branches of the ammonia ν2 band are calculated in the case of self-broadening with the effects of collisional interference of doublet components taken into account. It is shown that the cross-relaxation parameters do not exceed, as a rule, several percent of the values of the self-broadening coefficients and, consequently, the isolated line approximation is applicable in a wide pressure range. The calculated results are compared with experimental data.",
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    N2 - The relaxation parameters of lines of the P, Q, and R branches of the ammonia ν2 band are calculated in the case of self-broadening with the effects of collisional interference of doublet components taken into account. It is shown that the cross-relaxation parameters do not exceed, as a rule, several percent of the values of the self-broadening coefficients and, consequently, the isolated line approximation is applicable in a wide pressure range. The calculated results are compared with experimental data.

    AB - The relaxation parameters of lines of the P, Q, and R branches of the ammonia ν2 band are calculated in the case of self-broadening with the effects of collisional interference of doublet components taken into account. It is shown that the cross-relaxation parameters do not exceed, as a rule, several percent of the values of the self-broadening coefficients and, consequently, the isolated line approximation is applicable in a wide pressure range. The calculated results are compared with experimental data.

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