An Introduction to Neutron Scattering - Spallation Neutron Source
An Introduction to Neutron Scattering - Spallation Neutron Source
An Introduction to Neutron Scattering - Spallation Neutron Source
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What Do We Need for a Basic <strong>Neutron</strong> <strong>Scattering</strong> Experiment?<br />
• A source of neutrons<br />
• A method <strong>to</strong> prescribe the wavevec<strong>to</strong>r of the neutrons incident on the sample<br />
• (<strong>An</strong> interesting sample)<br />
• A method <strong>to</strong> determine the wavevec<strong>to</strong>r of the scattered neutrons<br />
• A neutron detec<strong>to</strong>r<br />
Detec<strong>to</strong>r<br />
Incident neutrons of wavevec<strong>to</strong>r k i Scattered neutrons of<br />
wavevec<strong>to</strong>r, k f<br />
Q<br />
k i<br />
k f<br />
Sample<br />
2<br />
h 2<br />
E = hω<br />
= ( ki<br />
− k<br />
2m<br />
We usually measure scattering<br />
as a function of energy (E) and<br />
wavevec<strong>to</strong>r (Q) transfer<br />
2<br />
f<br />
)
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