IndexingPeaks.htmlTEXTStMl>44h CrystalDiffract Online Help

Indexing Peaks


"Indexing peaks" is the process of assigning Miller Indices to diffraction peaks, to signify which sets of planes caused which reflection.

One has to be rather careful when indexing the peaks of a high-symmetry (e.g., cubic) crystal: sometimes several sets of planes with different Miller Indices can contribute to the same powder diffraction line. This happens when the d-spacings of the planes are the same, e.g., the d-spacing for the planes (5 0 0) and (4 3 0) is the same in a cubic crystal, so their diffraction peaks will overlap.


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