Dynamical symmetry breaking in the 4νCH rovibrational manifold of acetylene

M. A. Payne*, A. P. Milce, M. J. Frost, B. J. Orr

*Corresponding author for this work

Research output: Contribution to journalArticle

27 Citations (Scopus)


Time-resolved, fluorescence-detected infrared-ultraviolet double resonance spectroscopy of acetylene in the 12700 cm-1 '4νCH' rovibrational manifold reveals unusual symmetry-breaking energy transfer, induced (at least in part) by collisions. This takes the form of odd-numbered changes of the rotational quantum number J, despite the fact that intramolecular transfer between the ortho and para nuclear-spin modifications of such a molecule is usually forbidden.

Original languageEnglish
Pages (from-to)244-252
Number of pages9
JournalChemical Physics Letters
Issue number1-2
Publication statusPublished - 31 Jan 1997

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