Berlin 2014 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 51: Interaction with VUV and X-ray light III
A 51.2: Vortrag
Freitag, 21. März 2014, 10:45–11:00, BEBEL E42
Raman scattering of x-rays by heavy hydrogen-like ions — •Thorsten Jahrsetz1,2, Stephan Fritzsche3,4, and Andrey Surzhykov4 — 1Physikalisches Institut, Universität Heidelberg — 2GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt — 3Theoretisch-Physikalisches Institut, Universität Jena — 4Helmholtz-Institut Jena
The scattering of photons on atoms, ions or molecules may lead to an excitation of the target. In atomic physics, this so-called Raman scattering was studied mainly for light neutral atoms. Advances in electron beam ion traps (EBITs), brilliant x-ray sources, and x-ray detector technology, allow nowadays an experimental investigation of inelastic x-ray scattering by heavy highly-charged ions. In such experiments relativistic, higher-multipole and even QED effects can be examined in detail. To support these future studies, we performed a theoretical analysis of Raman scattering of x-ray photons by heavy hydrogen-like ions [1].
We used second-order perturbation theory and a relativistic Greens function approach to evaluate the (total) scattering cross-section, the angular distribution of the photons, and the polarization of the ion after the scattering process.
Special attention was paid to inelastic scattering involving the 1s1/2→ 2s1/2, the 1s1/2→ 2p1/2, and the 1s1/2→ 2p3/2 transitions in H, Xe53+, and U91+ targets.
[1] T. Jahrsetz et. al. in preparation