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A: Fachverband Atomphysik
A 10: Poster: Interaction with strong or short laser pulses
A 10.13: Poster
Montag, 23. März 2015, 17:00–19:00, C/Foyer
Molecular wave-packet dynamics on laser controlled transition states — •Andreas Fischer1, Martin Gärttner1, Philipp Cörlin1, Alexander Sperl1, Michael Schönwald1, Tomoya Mizuno1, Giuseppe Sansone2, Arne Senftleben3, Joachim Ullrich4, Bernold Feuerstein1, Thomas Pfeifer1, and Robert Moshammer1 — 1Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg — 2Dipartimento di Fisica, Politecnico Milano, Piazza Leonardo da Vinci 32, 20133 Milano , Italy — 3Institut für Physik, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel — 4Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig
Using a kinematically complete XUV-pump IR-probe experiment, we have studied the dissociation dynamics of molecular hydrogen induced by ultra-short extreme-ultraviolet (XUV) and near-infrared (IR) laser pulses by varying the time delay between these pulses. The measured fragment velocities are time-delay dependent, showing that the reaction kinematics can be controlled by varying the retardation of the control pulse. A semi-classical model, supported by a quantum dynamics simulation, provides an intuitive understanding of the underlying mechanism in terms of particle motion on laser-induced potential energy surfaces.