Hannover 2013 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 41: Poster: Electron scattering and recombination

A 41.7: Poster

Donnerstag, 21. März 2013, 16:00–18:30, Empore Lichthof

First observation of correlated photons emitted by a heavy highly charged ion — •Stanislav Tashenov¹, Dariusz Banas², Heinrich Beier³, Karl-Heinz Blumenhagen³, Carsten Brandau^3,5, Alexandre Gumberidze^3,5, Tobias Habermann³, Siegbert Hagmann³, Pierre-Michel Hillenbrand³, Ivan Kojouharov³, Christophor Kozhuharov³, Michael Lestinsky³, Yury Litvinov³, Shizu Minami³, Henning Schaffner³, Uwe Spillmann³, Thomas Stöhlker^3,4, and Andrey Surzhykov^1,3 — ¹Physics Institute, Heidelberg University, Heidelberg, Germany — ²Institute of Physics, Jan Kochanowski University, Kielce, Poland — ³GSI Helmholtzzentrum, Darmstadt, Germany — ⁴Helmholtz-Institut Jena, Germany — ⁵ExtreMe Matter Institute EMMI, GSI, Darmstadt, Germany

Two correlated photons emitted in the process of Radiative Electron Capture (REC) into an excited state 2p_3/2 of an initially bare uranium ion followed by its radiative decay were detected in coincidence. For this a relativistic beam of bare uranium ions, stored in the GSI storage ring ESR, collided with a gas target of N₂ atoms. The photons were detected by a setup of segmented large area germanium detectors. This experiment for the first time allows to determine the alignment of the states produced by REC where the recombination photon is observed. It represents a significant step towards the complete experiment of REC as well as of the photoelectric effect in time reversal.