Erlangen 2018 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 25: Poster Session I
A 25.33: Poster
Dienstag, 6. März 2018, 16:15–18:15, Redoutensaal
Diffractive imaging of a xenon nanoplasma with pnCCDs — •Timo Dörries1, Daniela Rupp2, Thomas Möller1, Mario Sauppe1, Maria Müller1, Anatoli Ulmer1, Bruno Langbehn1, Jan Philippe Müller1, Yevheniy Ovcharenko1, Benjamin Erk3, Jonathan Correa4, and Robert Hartmann5 — 1Technische Universität Berlin, Germany — 2Max-Born-Institut, Berlin, Germany — 3FLASH at DESY, Hamburg, Germany — 4XFEL at DESY, Hamburg, Germany — 5pnSensors, Munich, Germany
We have studied the interplay of intense coherent XUV pulses from the free-electron laser FLASH in Hamburg with single xenon clusters. They serve as ideal model systems for light matter interaction as they are easy to produce, size scalable, free flying particles that often have spherical symmetry. The used photon energies close to 90 eV are resonant to transitions in xenon atoms and ions; consequently a nanoplasma is formed with an altered scattering response and the emission of fluorescence light. Both the elastically scattered and fluorescence photons are detected using a single-photon sensitive large area detector (pnCCDs) with high dynamic range. Different detector coatings allow for identification of the fluorescence signal. Via Mie simulations, optical properties and thus information about the electronic structure of the clusters can be extracted.