Spin echo small angle neutron scattering

Measure of structures from around 20 to 2000 nm in size

Science with neutrons

Foundations
Neutron temperature Flux, Radiation, Transport Cross section, Absorption, Activation
Neutron scattering
Neutron diffraction Small-angle neutron scattering GISANS Reflectometry Inelastic neutron scattering Triple-axis spectrometer Time-of-flight spectrometer Backscattering spectrometer Spin-echo spectrometer
Other applications
Neutron tomography Activation analysis, Prompt gamma activation analysis Fundamental research with neutrons: Ultracold neutrons, Interferometry Fast neutron therapy Neutron capture therapy
Infrastructure
Neutron sources: Research reactor, Spallation, Neutron moderator Neutron optics: Reflector, Supermirror Detection
Neutron facilities
America: HFIR, LANSCE, NIST CNR -SNS Oceania: OPAL Asia: J-PARC, HANARO Europe: BER II, FRM II, ILL, ISIS Neutron and Muon Source, JINR, SINQ Historic: IPNS, HFBR Under construction: ESS
v t e

For broader coverage of this topic, see Small-angle scattering.

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. 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, block copolymer micelles, Stöber silica particles being a prime examples.

The technique offers some advantages over SANS but there are fewer SESANS instruments available than SANS instruments. Facilities for SESANS exist at TUDelft (Netherlands) and Rutherford Appleton Laboratory (UK).

References

"Spin-echo small-angle neutron scattering SESANS". TUDelft.
"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. 15 (1): 17–21. Bibcode:2019SMat...15...17S. doi:10.1039/C8SM01425F. ISSN 1744-683X. PMID 30520930. S2CID 54561253.
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. 12 (21): 4709–4714. Bibcode:2016SMat...12.4709P. doi:10.1039/C5SM02772A. ISSN 1744-683X. PMID 27021920.
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. Bibcode:2013JApCr..46..354R. doi:10.1107/S0021889812050029. ISSN 0021-8898.
"SESANS". TU Delft. Retrieved 2019-10-28.
"ISIS Larmor". www.isis.stfc.ac.uk. Retrieved 2019-10-28.

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