SMuK 2021 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 17: Poster II

P 17.40: Poster

Freitag, 3. September 2021, 14:00–16:00, P

Single-shot grating-based phase-contrast imaging at a laser-driven x-ray backlighter source — •Bernhard Akstaller, Stephan Schreiner, Max Schuster, Andreas Wolf, Veronika Ludwig, Thilo Michel, Gisela Anton, and Stefan Funk — Friedrich-Alexander Universität Erlangen-Nürnberg

We used a sub-picosecond x-ray flash, produced by a high-power laser and a tungsten backlighter wire, for phase-contrast imaging with short exposure times. With this, we demonstrated the feasibility of imaging a micron-sized (static) sample with a single-shot grating-based phase-contrast imaging setup. The obtained data is quantitatively analyzed and an enhancement of image quality is evaluated. The presented imaging technique allows to capture sharp images of fast dynamic processes like laser-produced plasma shock waves in the field of laboratory astrophysics, even if the absorption contrast is very low. The data was taken at the Petawatt High-Energy Laser for Heavy Ion Experiments at the GSI Helmholtzzentrum für Schwerionenforschung GmbH.