Berlin 2015 – wissenschaftliches Programm

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MI: Fachverband Mikrosonden

MI 7: X-ray Imaging, Tomography and X-ray Optics

MI 7.3: Vortrag

Mittwoch, 18. März 2015, 10:00–10:15, EMH 225

Cone Beam X-Ray Imaging and Tomography with Anisotropic Source Sizes — •Malte Vassholz and Tim Salditt — Institute for X-Ray Physics, Georg-August-Universität Göttingen, 37077 Göttingen, Germany

Nanoscale x-ray imaging and tomography are important methods for analysing hard and soft matter. However, it requires x-ray probes with high brilliance and small source sizes and is therefore carried out at synchrotrons. Towards the goal of nanoscale resolution we have tested the applicability of x-ray waveguide optics. While two dimensional waveguides provide an excellent probe but insufficient flux, planar waveguides provide an anisotropic probe with sufficient flux. The central challenge is to get isotropic resolution from probes with anisotropic source sizes. We have investigated new data-aquistion schemes and advanced three-dimensional reconstruction methods for imaging and tomography with anisotropic sources.