The effect of a resonance on vibrational structure in the photoelectron spectrum of acetylene

R. Unwin, I. Khan, N. V. Richardson, A. M. Bradshaw, L. S. Cederbaum, W. Domcke

Research output: Contribution to journalArticlepeer-review

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Abstract

A minimum in the partial photoionisation cross section for the 2Πu state of C2H2 at hv ≈ 14 eV is accompanied by a significant departure of the vibrational intensities from the Franck-Condon distribution. Using an explicit formula for resonant photoemission we show with model calculations that a resonance ≈3 eV above the first ionisation potential is responsible for this effect.

Original languageEnglish
Pages (from-to)242-245
Number of pages4
JournalChemical Physics Letters
Volume77
Issue number2
DOIs
StatePublished - 15 Jan 1981

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