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Powder Diffraction - Spallation Neutron Source

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<strong>Neutron</strong> <strong>Powder</strong> <strong>Diffraction</strong> with <strong>Spallation</strong><br />

<strong>Source</strong><br />

<strong>Spallation</strong> source<br />

provides a broad<br />

band of wavelengths<br />

in sharp pulses<br />

– TOF detection<br />

allows<br />

measurement of<br />

intensity versus<br />

wavelength<br />

– Each detector<br />

provides a full<br />

diffraction pattern<br />

– Data collection<br />

times:<br />

• Seconds to<br />

hours<br />

NPDF instrument at LANSCE (Los Alamos)<br />

28

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