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 |
|---|---|
| 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
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Reid, K. L., Field, T. A., Towrie, M., & Matousek, P. (1999). Photoelectron angular distributions as a probe of alignment evolution in a polyatomic molecule: Picosecond time- and angle-resolved photoelectron spectroscopy of S1 para-difluorobenzene. Journal of Chemical Physics, 111(4), 1438-1445.