SESANS with a monochromatic beam or with time-of-flight applied on colloidal systems

Spin-echo small-angle neutron scattering (SESANS) is an efficient method to measure particle sizes in real-space, because it eliminates the need for strong collimation of the beam. The fact that the information is in real-space gives some interesting differences with conventional SANS, which is disc...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2004-08, Vol.529 (1), p.16-21
Main Authors: Bouwman, Wim G, Stam, Wouter, Krouglov, Timofei V, Plomp, Jeroen, Grigoriev, Serguei V, Kraan, Wicher H, Rekveldt, M.Theo
Format: Article
Language:English
Subjects:
Colloids
Spallation source
Spin-echo small-angle neutron scattering
Time-of-flight
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Summary:Spin-echo small-angle neutron scattering (SESANS) is an efficient method to measure particle sizes in real-space, because it eliminates the need for strong collimation of the beam. The fact that the information is in real-space gives some interesting differences with conventional SANS, which is discussed with measurements of the phase transition in a colloidal system from gas via liquid to solid. Structures can be determined over three orders of magnitude in length scale, from 10 nm to 10 μm . We show the results with two different methods to realise SESANS: with π-flipping foils for a steady source with a monochromatised beam and with the neutron spin resonance echo method for a white pulsed source.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2004.04.150