42955 2017 eng 974 980 11-12 59 article Hanser Verlag 1 -- -- -- The performance of grating interferometers coming up now for Imaging interfaces within materials depends on the efficiency (visibility) of their main component, namely the phase grating. Therefore, experiments with monochromatic synchrotron radiation and corresponding simulations are carried out. The visibility of a Phase grating is optimized by different photon energies, varying detector to grating distances and continuous rotation of the phase grating about the grid lines. Such kind of rotation changes the projected grating shapes, and thereby the distribution profiles of phase shifts. This yields higher visibilities than derived from ideal rectangular shapes. By continuous grating rotation and variation of the propagation distance, we achieve 2D visibility maps. Such maps provide the visibility for a certain combination of grating orientation and detector position. Optimum visibilities occur at considerably smaller distances than in the standard setup. Materials Testing 10.3139/120.111097 0025-5300 07.12.2017 Yury Shashev Andreas Kupsch Axel Lange Sergei Evsevleev Bernd R. Müller Markus Osenberg Ingo Manke Manfred P. Hentschel Giovanni Bruno eng uncontrolled Synchrotron, BAMline eng uncontrolled Talbot-Lau interferometer eng uncontrolled X-ray imaging eng uncontrolled X-ray refraction eng uncontrolled Grating interferometry eng uncontrolled X-ray phase contrast Analytische Chemie Ingenieurwissenschaften und zugeordnete Tätigkeiten Verlagsliteratur Datei im Netzwerk der BAM verfügbar ("Closed Access")