Darmstadt 2008 – wissenschaftliches Programm

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K: Fachverband Kurzzeitphysik

K 10: Poster

K 10.6: Poster

Dienstag, 11. März 2008, 08:30–12:30, Poster C3

Characterization and comparison of multilayer optics for focusing of ultrashort X-ray pulses — •Uladzimir Shymanovich, Matthieu Nicoul, Wei Lu, Klaus Sokolowski-Tinten, Alexander Tarasevitch, and Dietrich von der Linde — Universität Duisburg-Essen, Institut für Experimentelle Physik, Lotharstr. 1, 47048 Duisburg

Different types of multilayer optics for the focusing of femtosecond X-ray pulses have been characterized and compared. Using X-rays from a laser-plasma based source we have measured the spatial distribution of the diffracted X-rays directly after and in the focal plane of the tested X-ray optics. The use of multilayer optics with a large magnification increases the magnitude of the diffracted signal from single-crystalline samples because of the increased angular flux density. Moreover it allows the use of diffraction geometries which usually require a collimated X-ray beam (i.e. Debye-Scherrer).