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

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Numerical calculations determine quantitative<br />

cross sections<br />

• Sign of diffuse scattering<br />

reverses for vacancy/interstitials<br />

• For interstitial loops- enhanced<br />

scattering at q=bH/4R<br />

• For coherent precipitates<br />

enhancement at q=-H<br />

Bragg Peak<br />

Vacancy Interstitial<br />

bH/4R<br />

Bragg Peak<br />

q

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