Microstructural studies using X-ray diffraction
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Discussion On Fit2d

Why should you use fit2d?

Maud does include some utility to convert Tiff images directly. However, in the context of high pressure experiments, I prefer to perform a first processing with fit2d before starting a refinement in Maud. Why? Here is the list

  • I use Fit2d anyway
    • on the beamline,
    • to have a first look at the data,
    • to calibrate the wavelength, detector distance, detector tilt...
    • and I know it well.
  • Not all diffraction images are in Tiff format
  • If you really want to use Maud to convert the images
    • you still need to define a beam center, one way or another.
    • you might not be consistent from one image to the next.
  • High pressure data tend to be dirty, with a lot of background, huge stresses, and very few peaks. Therefore, I find it easier to start a Rietveld refinement if I corrected some of it already...

Now, I should point out that

  • beam center, detector tilt, and detector distance from fit2d will only be used as a starting point.
  • detector tilt and detector distance will be recalibrated in Maud, with the standard,
  • beam center will be adjusted in Maud for each diffraction image.
Page last modified on March 20, 2008, at 05:01 PM