Do state-to-state propensity rules for vibrational energy transfer remain valid in the intermediate state density region?

Mudjijono, Warren D. Lawrance

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    State-to-state branching ratios are reported for vibrational energy transfer (VET) from the 82 and 7181 levels in S1 ρ{variant}-difluoro-benzene by He and H2 in a supersonic free jet expansion. 82 is in the sparse region of the vibrational manifold (Evib=350 cm-1; ρ{variant}vib≈0.05 states / cm-1) while 7181 is in the intermediate state density region (Evib=751 cm-1; pvib≈0.4 states / cm-1). Two principal results emerge: (i) the propensity rules that apply for 82 (sparse region) are not followed for 7181 (intermediate region) and (ii) He and H2 show virtually identical state-to-state branching ratios for 82 but not for 7181.

    Original languageEnglish
    Pages (from-to)447-455
    Number of pages9
    JournalChemical Physics Letters
    Volume227
    Issue number4-5
    DOIs
    Publication statusPublished - 16 Sep 1994

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