Strong non-adiabatic effects in C2D4 +

H. Köppel, L. S. Cederbaum, W. Domcke

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


It is demonstrated that the second band in the photoelectron spectrum Of C2D4 is subject to strong non-adiabatic effects, as was previously found for C2H4. The calculation yields a dense and irregular vibronic line structure, the line density exceeding that expected from the Franck-Condon principle by two orders of magnitude. The feasibility of extracting vibrational frequencies from peak spacings of the envelope of such complex bands is critically, examined.

Original languageEnglish
Pages (from-to)469-473
Number of pages5
JournalChemical Physics Letters
Issue number5
StatePublished - 12 Oct 1984
Externally publishedYes


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