Diffuse Scattering - Spallation Neutron Source - Oak Ridge National ...
Diffuse Scattering - Spallation Neutron Source - Oak Ridge National ...
Diffuse Scattering - Spallation Neutron Source - Oak Ridge National ...
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<strong>Neutron</strong>/ X-rays Complimentary For Short-range<br />
Order Measurements<br />
• Chemical order diffuse scattering<br />
proportional to contrast (f A-f B) 2<br />
• <strong>Neutron</strong> scattering cross sections<br />
– Vary wildly with isotope<br />
– Can have + and - sign<br />
– Null matrix<br />
– Low Z , high Z comparable<br />
• X-ray scattering cross section<br />
– Monotonic like Z 2<br />
– Alter by anomalous scattering
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