Heidelberg 2015 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 33: Collisions, scattering and recombination
A 33.5: Vortrag
Donnerstag, 26. März 2015, 15:30–15:45, C/kHS
Observation of coherence in the time-reversed relativistic photoelectric effect — •Stanislav Tashenov1, Holger Jörg1, Darius Banas2, Heinrich Beier3, Carsten Brandau3, Alexandre Gumberidze3, Siegbert Hagmann3, Pierre-Michel Hillenbrand3, Ivan Kojouharov3, Christophor Kozhuharov3, Michael Lestinsky3, Yury Litvinov3, Anna Maiorova4, Henning Schaffner3, Uwe Spillmann3, Thomas Stöhlker5,6, Andrey Surzhykov6, Stephan Fritzsche5, Sergiy Trotsenko3, and Vladimir Shabaev4 — 1Heidelberg University, Germany — 2Jan Kochanowski University, Kielce, Poland — 3GSI Helmholtzzentrum, Darmstadt, Germany — 4St. Petersburg State University, Russia — 5Friedrich-Schiller-Universität Jena, Germany — 6Helmholtz-Institut Jena, Germany
The photoelectric effect has been studied in the regime of hard x-rays and strong Coulomb fields via its time-reversed process of radiative recombination (RR). In the experiment the relativistic electrons recombined into the 2p3/2 excited state of hydrogenlike uranium ions and both, the RR x-rays as well as the subsequently emitted characteristic x-rays were detected in coincidence. This allowed to observe and manipulate the coherence between the magnetic substates in a highly charged ion and to identify the contribution of the spin-orbit interaction to the RR process.