Regensburg 2007 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 7: POSTER: INTERNAL SYMPOSIUM Scattering Experiments

CPP 7.11: Poster

Montag, 26. März 2007, 16:00–18:00, Poster B

High Pressure SAXS/WAXS using a Diamond Anvil Cell — •Ronald Gebhardt, Manfred Burghammer, Michael Hanfland, Mohamed Mezouar, and Christian Riekel — European Synchrotron Radiation Facility, B.P. 220, F-38043 Grenoble Cedex, France

The possibility of using a diamond anvil cell for SAXS/WAXS studies on small confined volumes has been explored at the ESRF ID13 beamline. As a demonstration experiment, single potato starch granules were pressurized up to 700 MPa at 20°C. In this pressure range a two-phase process was proposed (1,2). Scanning SAXS/WAXS experiments were performed with an about 1 micron beam. A Raman spectrometer was used to determine the pressure from the ruby fluorescence. The experimental setup is explained and first experimental results are shown. 1) Svensson E., Eliasson A. C. (1995) Carbohydrate Research, 26, 171-176 2) Rubens P., Heremans K. (2000) Biopolymers, 54, 524-530