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>Diffuse</strong> microdiffraction holds<br />
promise for irradiated materials<br />
• Powerful single crystal techniques<br />
applied to polycrystals<br />
• ~4-6 Orders of magnitude lower activity<br />
– Safer/lower backgrounds<br />
• Cryocooled samples to study initial<br />
defects<br />
• New information about<br />
point/line/mesoscale defect interactions<br />
Successful demonstration experiments!<br />
counts (electron units)<br />
10 7<br />
10 6<br />
10 5<br />
10 4<br />
10 3<br />
10 2<br />
10 1<br />
counts ~ q -4<br />
counts ~ q -2<br />
Unirradiated, (044)<br />
Irradiated (044)<br />
Irradiated, (033)<br />
Polycrystalline Fe, 77 K<br />
0.01 0.1<br />
|q| (reciprocal lattice units)
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