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Beamline: BW4
BW4 is a X-ray wiggler beamline with instrumentation to measure Small and Wide Angle X-ray Scattering.
A well collimated monochromatic X-ray beam is guided to a sample and the intensity of the radiation which is scattered from this sample under a broad angular range - from small to wide - relative to this incident beam is recorded as a function of the scattering direction.
Analysis of this scattering data provides information about structural inhomogeneities in the sample which can be on length scales of some Angstrom (Wide Angle X-ray Scattering) to a few micrometers (Ultra-Small Angle X-ray Scattering).
Basically, three different types of X-ray scattering techniques are applied:
- (Ultra-)Small and Wide Angle X-ray Scattering in transmission geometry - (U)SAXS and WAXS - to study structures in bulk material
- Grazing Incidence (Ultra-)Small and Wide Angle X-ray Scattering in reflection geometry - GI(U)SAXS and GIWAXS - to study structures at surfaces and in thin films
- SAXS Micro-Tomography to study spatial variations of the Small Angle Scattering in bulk 3D-samples
