Stuttgart 2012 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 22: Poster: Interaction with strong or short laser pulses

A 22.7: Poster

Dienstag, 13. März 2012, 16:30–19:00, Poster.V

The Physical Potential for the Tunneling Problem and Its Implementation — •Enderalp Yakaboylu, Michael Klaiber, Heiko Bauke, Karen Z. Hatsagortsyan, and Christoph H. Keitel — Max-Planck-Institut für Kernphysik (MPIK) Saupfercheckweg 1 69117 Heidelberg, Germany

In this work, laser-driven tunnel-ionization of ionic systems in the relativistic regime is considered. After giving a phenomenological definition of tunneling, the form of the potential barrier is investigated. Therefore in a first step the gauge-dependency of the system is eliminated and conditions on the electromagnetic field that make the effective potential a physical one are found via a path dependent formalism. Then the validity of these conditions is discussed for typical laser parameters and the results of this theoretical analysis are applied to interpret numerical calculations of the problem.