Spin echo small angle neutron scattering
Measure of structures from around 20 to 2000 nm in size
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Spin echo small angle neutron scattering (SESANS) is the small-angle version of neutron spin echo scattering. The information is presented as a real-space (similar to g(r)) as opposed to a reciprocal space (q(r)) mapping. This can simplify the interpretation for some systems.[1]
SESANS is useful for studying processes that occur for large structures over relatively long time scales, as data collection is often slow. It can achieve a resolution from around 20 to 2000 nm. Aggregation of colloids,[2] block copolymer micelles,[3] Stöber silica particles[4] being a prime examples.
The technique offers some advantages over SANS[5] but there are fewer SESANS instruments available than SANS instruments. Facilities for SESANS exist at TUDelft (Netherlands)[6] and Rutherford Appleton Laboratory (UK).[7]
