Berlin 2014 – scientific programme

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A: Fachverband Atomphysik

A 27: Poster: Photoionization

A 27.7: Poster

Tuesday, March 18, 2014, 16:30–18:30, Spree-Palais

Interaction effects on dynamical localization in driven helium — Felix Jörder, Klaus Zimmermann, •Alberto Rodriguez, and Andreas Buchleitner — Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg

Dynamical localization prevents driven atomic systems from fast fragmentation by hampering the excitation process. We present numerical simulations within a collinear model of microwave-driven helium Rydberg atoms and prove that dynamical localization survives the impact of electron-electron interaction, even for doubly excited states in the presence of fast autoionization. We conclude that the effect of electron-electron repulsion on localization can be described by an appropriate rescaling of the atomic level density and of the external field with the strength of the interaction [1].
[1] F. Jörder, K. Zimmermann, A. Rodriguez, and A. Buchleitner, arXiv:1311.5742