Disorder/defects/impurities static

Static defects in CVD diamonds such as stacking faults, dislocations, twinning, hydrogen, and other impurity atoms introduce displacement disorder of the carbon atoms. They cause shifts of atoms from the equilibrium positions. Static disturbances of lattice periodicity are the cause of X-ray or electron diffuse scattering. The intensity of diffuse scattering is a direct measure of the departure from the periodic network. The diffuse scattering around the 111 reciprocal lattice point is a very sensitive test for lattice periodicity of a CVD single crystal. 

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