A new approach to vibrational spectroscopy of ion clusters: the “zero kinetic energy (ZEKE)” photoelectron spectrum of the phenol—water complex
✍ Scribed by Georg Reiser; Otto Dopfer; Reiner Lindner; Gilles Henri; Klaus Müller-Dethlefs; Edward W. Schlag; Steven D. Colson
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 379 KB
- Volume
- 181
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
The vibrational spectrum of the phenol-H20 cation complex is obtamed by two-colour resonant pump-probe "zero kinetic energy (ZEKE)" spectroscopy. The ZEKE electron signal only appears when the total photon energy exactly matches a transition to a cluster ion state. The results are: an accurate value of the adiabatic ionisation energy, and a well resolved vibrational spectrum assigned to intermolecular modes. The ZEKE method provides a resolution (0.4 cm-') close to Laser bandwidths. Thus, vibrational frequencies of the cluster ion are obtained to a precision not available with any other method.