Photoelectron angular distributions as a probe of alignment evolution in a polyatomic molecule: Picosecond time- and angle-resolved photoelectron spectroscopy of S1 para-difluorobenzene

Katharine L. Reid*, Thomas A. Field, Michael Towrie, Pavel Matousek

*Corresponding author for this work

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

We demonstrate that picosecond time-resolved photoelectron angular distributions (PADs) provide a sensitive probe of an evolving alignment in an excited polyatomic molecule. Such an evolving alignment can be caused by pure rotational recurrences or by rotation-vibration coupling. If a molecule is chosen for which the rotational recurrence times are well-known the method provides a means of establishing the mechanism of intramolecular vibrational energy redistribution (IVR). In the case of S1 para-difluorobenzene we observe striking alignment changes as a function of pump-probe time delay which we attribute to rotationally mediated IVR.

Original languageEnglish
Pages (from-to)1438-1445
Number of pages8
JournalJournal of Chemical Physics
Volume111
Issue number4
Publication statusPublished - 22 Jul 1999
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Fingerprint Dive into the research topics of 'Photoelectron angular distributions as a probe of alignment evolution in a polyatomic molecule: Picosecond time- and angle-resolved photoelectron spectroscopy of S<sub>1</sub> para-difluorobenzene'. Together they form a unique fingerprint.

  • Cite this