Darmstadt 2008 – scientific programme

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A: Fachverband Atomphysik

A 21: Atomic systems in external fields

A 21.2: Talk

Thursday, March 13, 2008, 11:30–11:45, 3D

Non-hydrogenic Rydberg atoms in crossed electric and magnetic fields — •Celsus Bouri¹, Javier Madroñero^2,3, Thomas Gorin⁴, and Andreas Buchleitner¹ — ¹Quantum Optics and Statistics, Institute of Physics, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany — ²PAMO, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
— ³Physik Department, Technische Universität München, Garching, Germany
— ⁴Departamento de Física, Universidad de Guadalajara, Guadalajara, Mexico

Fluctuations of the ionization cross section for non-hydrogenic Rydberg atoms in crossed electric and magnetic fields are considered - in a regime where strongly overlapping resonances dominate the fragmentation process. We address some open issues concerning the identification of this scenario as an examplary case of Ericson fluctuations in a deterministic Hamiltonian systems - which stem from the multielectron core as well as from the mixedness and high dimensionality of the underlying classical phase space.