Hannover 2010 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 8: Poster I
A 8.56: Poster
Dienstag, 9. März 2010, 16:30–19:00, Lichthof
Bound Dirac electrons interacting with laser fields — •Octavian Postavaru1,2, Zoltán Harman1,2, and Christoph H. Keitel1 — 1Max-Plank-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany — 2ExtreMe Matter Institute EMMI, Planckstrasse 1, 64291 Darmstadt, Germany
We investigate the level structure and excitation processes of few-electron ions in laser beams. Interaction with the light field leads to dynamic shifts and splitting of the electronic energy levels. We apply a fully relativistic description of the electronic states by means of the Dirac equation. The frequency spectrum of the fluorescence photons for resonant driving, as well as excitation rates and light shifts in the case of two-photon excitation are presented. The results are relevant for experiments at present and near-future laser facilities.