Dresden 2017 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 39: X-Ray Imaging, Holography, Ptychography and Tomography

MA 39.4: Vortrag

Mittwoch, 22. März 2017, 10:30–10:45, MER 02

Simulations towards high magnification setups in X-ray Talbot-interferometry — •Andreas Wolf, Veronika Ludwig, Jens Rieger, Max Schuster, Maria Seifert, Georg Pelzer, Thilo Michel, Gisela Anton, and Stefan Funk — ECAP - Erlangen Centre for Astroparticle Physics, Universität Erlangen-Nürnberg, Erwin-Rommel-Str. 1, 91058 Erlangen

Compared with the traditional attenuation contrast, X-ray Talbot-interferometry can yield additional information in terms of the differential phase contrast (DPC) and the dark field contrast (DFC) images.

In this imaging modality, which is primarily pursued in the field of medical diagnostics and soft tissue imaging, the Talbot effect leads to the generation of self images of a grating in the beam path. With respect to the thus created spatial reference pattern and by introducing a second grating, the aforementioned contrast modalities can be retrieved either via a phase-stepping approach or by using Moiré-fringes in a single-shot scheme.

In this contribution, we present simulation studies of Talbot-interferometer-based setups featuring high magnifications towards future applications for imaging at XFEL-beamlines and in the field of laboratory astrophysics where a high magnification of object structures is needed to resolve the generated shocks.