Hamburg 2009 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 4: Electron Scattering and Recombination
A 4.1: Hauptvortrag
Montag, 2. März 2009, 14:00–14:30, VMP 6 HS-E
Relativistic quantum dynamics in extremely strong electromagnetic fields — •Andrey Surzhykov1,2, Anton Artemyev1,2, Stephan Fritzsche2,3, and Thomas Stöhlker1,2 — 1Universität Heidelberg — 2GSI Helmholtzzentrum für Schwerionenforschung GmbH — 3Frankfurt Institute for Advanced Studies
Recent progress in theoretical studies of electronic structure and dynamical behaviour of highly–charged, heavy ions is reviewed. These investigations show that high–Z ions provide a unique tool for improving our understanding of the electron–electron and electron–photon interaction in the presence of extremely strong electromagnetic fields. We discuss that strong–filed phenomena can be probed, for instance, by exploring the radiative stabilization of excited ionic states produced by means of radiative and dielectronic recombination [1] as well as Coulomb excitation [2]. Special attention is paid, moreover, to the electron–positron pair production in relativistic collisions of highly–charged projectiles with atomic and electronic targets. For these collisions, we present recent results on the negative continuum dielectronic recombination of (initially) bare ion; the process which leads to a production of a continuum–state positron and a residual helium–like ion and which attracts nowadays much of interest both, in experiment and in theory.
[1] S. Fritzsche et al., PRA 78, 032703 (2008).
[2] A. Surzhykov et al., PRA 77, 042722 (2008).