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Diffuse Scattering - Spallation Neutron Source - Oak Ridge National ...

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Krivoglaz classified defects by effect on Bragg Peak<br />

• Defects of 1st kind<br />

– Atomic displacements remain finite<br />

– Bragg width unchanged<br />

– Bragg intensity decreased<br />

– <strong>Diffuse</strong> redistributed in reciprocal<br />

space<br />

• Defects of 2nd kind<br />

– No longer distinct Bragg peaks<br />

– Displacements continue to grow with<br />

crystal size<br />

Intensity<br />

No defects<br />

<br />

Defects of 1st kind<br />

Defects of 2nd kind

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