Berlin 2005 – wissenschaftliches Programm
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A: Atomphysik
A 2: Multiple Fragmentation of Atoms and molecules
A 2.3: Fachvortrag
Freitag, 4. März 2005, 11:15–11:30, HU 3094
Time-dependent calculations describing H2 in intense ultra-short laser pulses — •Manohar Awasthi, Yulian Vanne, and Alejandro Saenz — Humboldt-Universität zu Berlin, Institut für Physik, AG Moderne Optik, Hausvogteiplatz 5-7, 10117 Berlin, Germany
The advent of ultra-short laser pulses has increased the interest in the field of laser-matter interaction. With processes like bond softening, bond hardening and enhanced ionisation coming into play, the field is expected to disclose even more phenomena to be discovered. Molecular hydrogen being the simplest molecule provides the basic framework for studying molecule-laser interaction. We solve the three-dimensional time-dependent Schrödinger equation in the basis of field-free states obtained from a configuration-interaction calculation in a B-spline basis. First results were obtained in the fixed-nuclei approximation. We present ionisation rates and excitation probabilities for different photon energies and intensities. In addition, the orientational dependence is investigated.