Erlangen 2026 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 18: Instrumentation IV

HK 18.8: Talk

Tuesday, March 17, 2026, 18:00–18:15, PHIL B 302

Characterization of hydrogen clusters using shadowgraphy measurements — •Anna Luna Hannen, Hanna Eick, and Alfons Khoukaz — Institute for Nuclear Physics, University of Münster, Germany

Cluster-jet targets can be used in accelerator beam experiments that require high event rates and precise measurements of the resulting particles, for example the upcoming PANDA experiment or MAGIX the experiment.
The properties of a cluster beam and the individual clusters can be studied using e.g. shadowgraphy measurements. The cluster beam is created using a cluster-jet source. The clusters are then illuminated with a short-pulsed laser, allowing the shadow of the clusters to be photographed. Through the analysis of the resulting shadowgraphy images, the size and velocity distributions of the clusters can be determined.
Measurements were taken at the Münster cluster-jet target using shadowgraphy, and size distributions were already measured as a result. Future goals are to refine the measurements and analysis of the shadowgraphy images.
This talk provides an overview of the shadowgraphy experiment and the new developments in the shadowgraphy measurements. This research project was supported by BMBF (05P21PMFP1) and NRW Netzwerke (NW21-024-E).

Keywords: Shadowgraphy; Cluster-Jet Target