Spin echo small angle neutron scattering explained
Spin echo small angle neutron scattering (SESANS) measures structures from around 20 to 2000 nm in size. 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 over relatively long time scales, as data collection is often slow, but large length scales. 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]
References
- Web site: Spin-echo small-angle neutron scattering SESANS. TUDelft.
- Web site: Colloidal phase diagram studied by SESANS. TUDeltf.
- Smith. Gregory N.. Cunningham. Victoria J.. Canning. Sarah L.. Derry. Matthew J.. Cooper. J. F. K.. Washington. A. L.. Armes. Steven P.. 2019. Spin-echo small-angle neutron scattering (SESANS) studies of diblock copolymer nanoparticles. Soft Matter. en. 15. 1. 17–21. 10.1039/C8SM01425F. 30520930. 2019SMat...15...17S . 54561253 . 1744-683X.
- Parnell. S. R.. Washington. A. L.. Parnell. A. J.. Walsh. A.. Dalgliesh. R. M.. Li. F.. Hamilton. W. A.. Prevost. S.. Fairclough. J. P. A.. Pynn. R.. 2016. Porosity of silica Stöber particles determined by spin-echo small angle neutron scattering. Soft Matter. en. 12. 21. 4709–4714. 10.1039/C5SM02772A. 27021920. 2016SMat...12.4709P . 1744-683X. free.
- Rehm. Christine. Barker. John. Bouwman. Wim G.. Pynn. Roger. 2013-04-01. DCD USANS and SESANS: a comparison of two neutron scattering techniques applicable for the study of large-scale structures. Journal of Applied Crystallography. 46. 2. 354–364. 10.1107/S0021889812050029. 2013JApCr..46..354R . 0021-8898.
- Web site: SESANS. TU Delft. en. 2019-10-28.
- Web site: ISIS Larmor. www.isis.stfc.ac.uk. 2019-10-28.