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O: Fachverband Oberflächenphysik
O 27: Poster Session I (Methods: Scanning probe techniques; Methods: Atomic and electronic structure; Methods: Molecular simulations and statistical mechanics; Oxides and Insulators: Clean surfaces; Oxides and Insulators: Adsorption; Oxides and Insulators: Epitaxy and growth; Semiconductor substrates: Clean surfaces; Semiconductor substrates: Epitaxy and growth; Semiconductor substrates: Adsorption; Nano- optics of metallic and semiconducting nanostructures; Electronic structure; Methods: Electronic structure theory; Methods: other (experimental); Methods: other (theory); Solutions on surfaces; Epitaxial Graphene; Surface oder interface magnetism; Phase transitions; Time-resolved spectroscopies)
O 27.33: Poster
Tuesday, March 24, 2009, 18:30–21:00, P2
Liquid Interfaces Scattering Apparatus (LISA) for PETRA III: Design and Modelling — •Benjamin Runge1, Bridget Murphy1, Matthias Greve1, Annika Elsen1, Jochim Stettner1, Oliver Seeck2, and Olaf Magnussen1 — 1IEAP, Christian-Albrechts-Universität zu Kiel, D-24098 Kiel, Germany — 2PETRA III at DESY, Notkestr. 85, D-22603 Hamburg, Germany
With the completion of PETRA III at DESY Hamburg a high brilliance synchrotron source will be available. This will create new opportunities for studies of buried interfaces, such as liquid-liquid interfaces.
Our Liquid surface diffractometer, LISA, currently under construction, will operate in the energy range from 6.4keV to 30keV and provide access to a momentum space of up to qz = 2.5 Å−1. LISA will take advantage of the low vertical and horizontal divergence available at the high resolution X-ray beamline by employing a double crystal setup instead of a single beam tilt crystal as in current liquid surface diffractometers. As a result the angle of incident can be simply varied through a rotation of the crystal stage eliminating the need to move the sample during reflectivity measurements. Furthermore, the sample stage will be mechanically decoupled from both the beam tilt element and the detector stage. This setup will allow to minimize mechanical vibrations of the liquid interface, a key issue in such studies. We present the design concept for LISA and model calculations for the performance of the x-ray optics.
This work is supported by BMBF-05-KS7KF3.