Dresden 2009 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 32: Polymer Physics III

CPP 32.8: Talk

Thursday, March 26, 2009, 11:30–11:45, ZEU 222

Recent Experiments at the SAXS Beamline BW4 — •Andreas Timmann, Ralph Döhrmann, Tom Schubert, Stephan V. Roth, and Rainer Gehrke — HASYLAB at DESY, Notkestr. 85, D-22603 Hamburg, Germany

The BW4 beamline at HASYLAB is a versatile small-angle x-ray scattering (SAXS) beamline. It offers transmission and grazing incidence SAXS using sample-detector distances (D_SD) between one meter and 13 meters. For D_SD< 2m it also offers a moderate micro-focus of 22× 40 µm² at sample position. All SAXS techniques can be combined with wide-angle x-ray scattering.[1]

Recently we conducted in-situ GISAXS experiments such as rheology and sputter-deposition.[2,3]

We also examined a beryllium compound refractive lens (Be-CRL) as focusing optic for USAXS geometries. Its usage results in an undistorted beam and the background is considerable lower than that caused by focusing mirrors[4]

References:
Roth et al., Rev. Sci. Instrum., 2006, 77, 085106
Timmann et al., App. Phys. Let., 2007, 91, 213102
E. Metwalli et al., Langmuir, 2008, 24, 4265
Timmann et al., Rev. Sci. Instrum., submitted