Known versus unknown unit cell dimensions

Known versus unknown unit cell dimensions 

Indexing of powder diffraction data when unit cell dimensions are known with certain accuracy includes  

Generating a list of all possible combinations of S3mimetrically independent hkl triplets, which can be observed within the studied range of Bragg angles. 

Calculating interplanar distances using the generated list of hkl, the best estimate of the unit cell dimensions a, b, c, a, P, and y) and the appropriately simplified form of Eq. 5.2 (see Eqs. 2.29 to 2.34). 

Assigning hkl triplets to the observed Bragg peaks based on the minimum difference between and (or 0° and 

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Known versus unknown unit cell dimensions... 

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