Erlangen 2018 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 27: XUV/X-ray Science
A 27.9: Vortrag
Mittwoch, 7. März 2018, 16:00–16:15, K 1.011
Rayleigh scattering of twisted light by hydrogenlike ions — •Anton Peshkov1, Andrey Volotka1, Andrey Surzhykov2,3, and Stephan Fritzsche1,4 — 1Helmholtz-Institut Jena, Germany — 2Physikalisch-Technische Bundesanstalt, Braunschweig, Germany — 3Technische Universität Braunschweig, Germany — 4Friedrich-Schiller-Universität Jena, Germany
The elastic scattering of photons by bound electrons of atoms, commonly known as Rayleigh scattering, has attracted much interest in experiment and theory as one of the simplest second-order quantum electrodynamical process. In particular, the measurement of the linear polarization of the elastically scattered plane-wave radiation has been recently performed at the PETRA III synchrotron at DESY [1]. Until the present, however, very little is known about the scattering of twisted light. When compared to plane-wave photons, such twisted photons carry a well-defined projection of the orbital angular momentum [2]. Here we analyze theoretically the behavior of the polarization Stokes parameters of scattered photons for the elastic scattering of twisted Bessel light by means of the Dirac’s relativistic equation. Special attention was paid to the scattering on three different atomic targets: a single atom, a mesoscopic (atoms in a trap) and a macroscopic (foil) targets. Our calculations indicate that the Stokes parameters of the scattered twisted light may significantly differ from their behaviour for an incident plane-wave radiation.
[1] K.-H. Blumenhagen et al., New J. Phys. 18, 103034 (2016).
[2] A. A. Peshkov et al., Phys. Rev. A 96, 023407 (2017).