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Rostock 2019 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 17: Cluster II (joint session A/MO)

MO 17.2: Poster

Mittwoch, 13. März 2019, 16:15–18:15, S Fobau Physik

Modular He nanodroplet source and doping setup for the SQS instrument at the European XFEL — •Anatoli Ulmer1, Rico Mayro P. Tanyag1,2, Katharina Kolatzki1,2, Georg Noffz1, Patrick Behrens1, Fabian Seel1, Bruno Langbehn1, Mario Sauppe2, Yevheniy Ovcharenko3, Daniela Rupp2, and Thomas Möller11Technische Universität Berlin — 2Max-Born-Institut Berlin — 3European XFEL GmbH

Ultra-cold helium nanodroplets gain growing attention in many fields, which can be attributed to their fascinating properties: they are superfluid, form quantized vortices and can be doped with various atomic or molecular samples. With the advance of Free-Electron Lasers (FEL), it has become feasible to determine the outer shapes as well as the structures of embedded nanometer-sized samples by using flash X-ray imaging. This opens a variety of experimental roads, such as cluster growth in a superfluid environment, using different droplet sizes, shapes and dopants. We developed a modular source and doping setup, which will be permanently available for user experiments at the SQS instrument of the European XFEL. A wide range of experiments will be enabled by using either an Even-Lavie Valve, a commercial Parker Valve, or a continuous jet nozzle. Furthermore, a doping system, consisting of a gas cell and two metal ovens, was designed to explore the formation and interaction of structures nested inside superfluid He droplets. The layout and characterization measurements of the setup will be presented.

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