Regensburg 2016 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 53: Magnetic Scattering Methods

MA 53.2: Vortrag

Freitag, 11. März 2016, 09:45–10:00, H33

Quenching of the Resonant Magnetic Scattering by Ultra-Short Free-Electron Laser Light Pulses — •Leonard Müller¹, Magnus H. Berntsen², Wojciech Roseker¹, Kai Bagschik³, Jochen Wagner³, Robert Frömter³, Flavio Capotondi⁴, Emanuele Pedersoli⁴, Michele Manfredda⁴, Miltcho B. Danailov⁴, Maya Kiskinova⁴, Hans P. Oepen³, and Gerhard Grübel¹ — ¹Deutsches Elektronen Synchrotron DESY, Hamburg, Germany — ²KTH, Stockholm, Sweden — ³University Hamburg, Hamburg, Germany — ⁴Elettra Sincrotrone Trieste, Basovizza, Italy

The new free-electron laser (FEL) sources provide radiation with unprecedented parameters in terms of ultrashort pulse length, high photon flux, and coherence. These properties make FELs ideal tools for studying ultrafast dynamics in matter on a previously inaccessible level. Yet, FELs do not only probe matter, but can also drive it in highly excited states which are otherwise inaccessible.

Here, we report on a resonant magnetic scattering experiment, where the focussed FEL light pulses probe the magnetic domain system of a thin magnetic film. Both, single and double FEL pulses at different fluences are used to follow the quenching of the resonant scattering efficiency.