Helium-like uranium (IMAGE)

GSI Helmholtzzentrum für Schwerionenforschung GmbH

Helium-like uranium

Caption

An illustration of helium-like uranium, with the strong-field QED effects represented by Feynman diagrams. At present, the effects with two loops represent the limit of non-perturbative (with respect to the field of the nucleus) theoretical predictions. The background shows an x-ray image of the measured transition.

Credit

Picture: M.Trassinelli (CNRS), A. Gumberidze, Th. Stöhlker (GSI/FAIR), R. Lötzsch (FSU Jena)

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