Darmstadt 2008 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 3: Femtosekundenspektroskopie I
MO 3.2: Vortrag
Montag, 10. März 2008, 14:30–14:45, 3G
Three-Pulse-Spectroscopy in neat water and aqueous solution — •Martin K. Fischer, Hristo Iglev, and Alfred Laubereau — Physik-Department E11, Technische Universität München, 85748 Garching, Germany
The ultrafast generation and solvation of electrons in liquids is studied by pump-repump-probe spectroscopy. The application of a third pulse to excite the precursors of the fully hydrated electron leads to the manipulation of the relaxation process.
The technique was applied to study the dynamics in neat H2O, 15mMol NaBr and 15mMol NaI aqueous solutions. The measured transients are compared to the corresponding pump-probe data. The observed increase in the yield of the long-lived hydrated electrons leads to a novel information about the generation process.