Stuttgart 2012 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 24: Poster: Interaction with VUV and X-ray light

A 24.9: Poster

Mittwoch, 14. März 2012, 16:30–19:00, Poster.V

Cluster Sources for the Low Density Matter Beamline at the FERMI Free Electron Laser — •Raphael Katzy, Viktor Lyamayev, Marcel Mudrich, and Frank Stienkemeier — Universität Freiburg, Physikalisches Institut, D-79104 Freiburg, Germany

Applying high gain harmonic generation process (HGHG) the new FERMI free electron laser in Trieste provides intense XUV pulses of high brilliance with tunable wavelength and excellent confinement in time.

The LDM endstation has been designed to combine the FERMI XUV radiation with molecular beam experiments. In several exchangeable beam sources, atomic, molecular and cluster beams are generated and can be doped by the pick-up technique in oven cells or in a laser ablation unit. Detailed information about the interaction with the FEL light is gathered by combined VMI, TOF and X-ray imaging detectors.

Design and characterization of two sources are presented: A versatile high temperature high pressure pulsed source is utilized for generation of atomic, molecular and cluster beams of various materials in a gas expansion or applying the seeded beams technique. A pulsed cryogenic source gives the opportunity to use helium droplets with their unique cold, superfluid properties.