Berlin 2015 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 71: Surface Dynamics
O 71.5: Poster
Mittwoch, 18. März 2015, 18:15–21:00, Poster A
The optical pump - X-Ray probe option of the LISA Liquid Surface Diffractometer — •Jonas Warias1, Christoph Lemke1, Matthias Greve1, Bridget Murphy1,2, and Olaf Magnussen1,2 — 1Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, Germany — 2Ruprecht Haensel Laboratory, Christian-Albrechts-Universität zu Kiel, Germany
The study of liquid surfaces and interfaces is of crucial importance for understanding many physical, chemical and biological phenomena. The LISA diffractometer [1], installed at the P08 beamline at the PETRA III synchrotron radiation source Hamburg, is a specialized instrument for hard X-ray scattering studies of liquid surfaces and interfaces. In the poster we describe ongoing work on extending this instrument's capabilities by an optical pump - X-ray probe option, which allows investigations of ultrafast processes at liquid interfaces. This includes installation of a 200 μJ pulse energy fs-laser providing wavelengths from 210 nm to 2600 nm and optics for directing the laser pulse on the sample surface. The setup takes advantage of the specific design of LISA, where all scattering studies in the range from 6.5 keV to 29 keV can be performed without moving the sample. It will allow structural studies of non-equilibrium nanoscale processes at liquid interfaces and langmuir films. We thanks the BMBF (05K13FK2) for funding this project. [1] B.M. Murphy et al. J. Synchrotron Rad. 21 (2014) 45-46