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 language | English |
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Pages (from-to) | 1438-1445 |
Number of pages | 8 |
Journal | Journal of Chemical Physics |
Volume | 111 |
Issue number | 4 |
Publication status | Published - 22 Jul 1999 |
Externally published | Yes |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics