Hannover 2003 – wissenschaftliches Programm
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MO: Molekülphysik
MO 9: Ultraschnelle Elektronendynamik
MO 9.1: Vortrag
Donnerstag, 27. März 2003, 14:00–14:15, B 302
Time–resolved photoelectron spectroscopy of molecular dissociation: classical trajectory versus quantum wave–packet calculations — •Volker Engel1 and Christoph Meier2 — 1Institut für Physikalische Chemie, Universität Würzburg, 97974 Würzburg, Germany — 2Laboratoire Collisions, Agrégats et Réactivité (IRSAMC),Université Paul Sabatier, 31062 Toulouse, France
We present a simulation of ultrafast pump-probe photoelectron spectroscopy based on a classical treatment of the nuclear motion [1]. A comparison with quantum mechanical wave packet results shows that in the case of the direct dissociation of H2O in its Ã1B1 electronic state this method produces extremely accurate results. The energy distribution of the photoelectrons recorded as a function of the pump/probe delay reflects the dissociation process which takes place within only a few femtoseconds. [1] C. Meier and V. Engel, Phys. Chem. Chem. Phys. 4, 5014, (2002).