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A: Fachverband Atomphysik
A 8: Interaction with intense laser pulses II: Molecules and beyond
A 8.2: Talk
Tuesday, March 11, 2008, 14:30–14:45, 3C
Electron-nuclear correlation in above-threshold-ionization of molecular hydrogen — •Stefan Pieper1 and Manfred Lein2 — 1Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany — 2Institut für Physik, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
The ionization of molecules in strong, short laser pulses leads due to the absorption of many photons to “ATI peaks" in the kinetic-energy spectrum of the emitted electron. Because of the occupation of various vibrational levels of the remaining ion, the ATI peaks are smeared out. This is a consequence of energy loss for some electrons in favor of the ionic vibration. The numerical simulation of a model hydrogen molecule via solving the time-dependent Schrödinger equation shows that the intrinsic, discrete energy scale of the vibrational levels leads to the observation of novel correlation effects such as spectral enhancements within the rescattering plateau for certain vibrational states.