Support peaks
If a reference dataset with ideal peak shape is available (no sample-related peak broadening), beamline configuration parameters can be fitted to these peaks as follows:
- Use conventional curve fitting to fit Pseudo-Voigt functions to the experimental peaks.
- Store the fitted parameters in a text file in the format:
2theta;fwhm;shape
2theta;fwhm;shape
2theta;fwhm;shape
2theta and fwhm must be given in degrees. Lines starting with "!" and "#" are treated as comments. Save the file with the extension CSV.
- Click "File -> Import support peak list" to load the peak list in the synchrotron configurator. The FWHMs of the support peaks will be drawn on the graph.
- Go to the "Computation range" page and adjust the 2θ range to the effective range covered by the current beamline configuration.
- Go to the "Beamline configuration" page and check the boxes of the parameters to be fitted.
- Click "Run -> Fit fundamental parameters."
Double-clicking support peak parameters allows to modify them after loading.