In crystal growth how do we fix the angle for taking powder xrd analysis?

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Rico Berthold

The question is somewhat confusing. Which angle do you mean? Clearly the theta angle is not fixed... If you are asking about wether to use wide angle or small angle xrd, this depends on the distance between the objects in your material that you want to study. If its atoms, wide angle is good, if its particles, crystallites, lamellae, micelles impurities, small angle is good.

V. Mathivanan

Depending the material of the crystals grown, the angle theta can be fixed.