Berlin 2014 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 41: Interaction with VUV and X-ray light II
A 41.7: Vortrag
Donnerstag, 20. März 2014, 15:45–16:00, BEBEL E42
Polarization correlations in the Rayleigh scattering — •A. Surzhykov1, V. Yerokhin2, T. Jahrsetz1, Th. Stöhlker1,3,4, and S. Fritzsche1,5 — 1Helmholtz-Institut Jena, — 2St. Petersburg State Polytechnical University — 3GSI Helmholtzzentrum für Schwerionenforschung — 4Institut für Optik und Quantenelektronik, Universität Jena — 5Theoretisch-Physikalisches Institut, Universität Jena
Studies on the elastic Rayleigh scattering of photons by bound atomic electrons have a long tradition. Over the last decades, for example, a number of experimental and theoretical works have dealt with the total as well angle-differential cross sections. More recent investigations are focused on the linear polarization of the scattered photons. Of particular interest is the question of how this polarization is affected if the incident light is itself (linearly) polarized. In order to better understand such a polarization transfer between the incoming and outgoing photons, theoretical analysis has been performed by us based on the second-order perturbation approach [1]. Detailed calculations were carried out for Ne, Xe and U targets, and for photon energies up to ten times the 1s ionization threshold. Based on these calculations we found that the (degree) of linear polarization of scattered x-rays is generally significantly reduced comparing to the polarization of the incident light. Such a “depolarization” is mainly caused by the relativistic effects and non-dipole contributions to the electron-photon interaction and becomes most pronounced for the backward x-ray scattering.
[1] A. Surzhykov et al., submitted to PRA.