Data Reduction
To make your data processing easier, we provide the essential software tools for data reduction.
SAXS data reduction
The processing of the raw SAXS patterns consists of a series of corrections, followed by an azimuthal integration between specified limits. Specific Matlab programs have been created for BSL, edf, tiff and hdf5/nexus data.
The following corrections are applied to the SAXS images:
- normalization of the image with respect to the intensity of the incident beam
- q calibration; we often use silver behenate (moderate to high q range) or rat tail collagen (low q)
- correction for sample transmission and background subtraction
- masking of unwanted pixels
- azimuthal integration (using pyFAI)
- intensity calibration in cm-1 (if used)
- invariant calculation.
Below we present an illustration of SAXS data reduction using one of our Matlab programs calling fit2d (in a Linux environment).
WAXS data reduction
- q calibration standards: alpha alumina, high density polyethylene, NIST silicon powder
partners
European Synchrotron Radiation Facility - 71, avenue des Martyrs, CS 40220, 38043 Grenoble Cedex 9, France.