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Sesans Development and Applications in Instrumental Activities for Density Correlation Functions Measurements

Past instrumental activities include building monochromatic Sesans with magnetised foils, Future plans involve cooperation with ISIS to build at 2nd target station. Collaboration with Technische Universitaet Wien for Sesans measures on silicon gratings, directly shaping ridges. Exciting applications in elastic scattering techniques. A new area of science exploration.

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Sesans Development and Applications in Instrumental Activities for Density Correlation Functions Measurements

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  1. Task 5-A Development and test SESANS • Instrumental activities • SESANS applications • Measurements on gratings

  2. Instrumental activities Past • Finished building monochromatic SESANS with magnetised foils: working instrument * • Showed proof of principle NRSE TOF-SESANS* Future • TOF-SESANS with foils • Started cooperation with ISIS to build at 2nd target station SE-option at Off-Spec (task 5B)Dutch, ISIS and European funds * NIMA 529 (2004) 16-21

  3. z sample SESANS = interference spin-states neutron, yields density correlation functions • Tunable magnetic fields with tilted interfaces separate = |> |> state neutron • Polarisation as function spin-echo length = scattering length density correlation function

  4. Colloidal interaction - - - + + - + - + - + - - - - - + - - 1 yoghurt 0.9 milk 1 P(z) curd 0.9 0.8 0.8 lognormal 0.7 0.6 0.5 0.7 0.4 0.3 0 1000 2000 3000 4000 5000 0 2 4 6 8 10 z[nm] Test applications of SESANS Dairy products m-emulsions • Granular materials • Gels • Gratings

  5. SESANS on silicon gratings Collaboration with: M. Trinker, E. Jericha & H. Rauch, Technische Universitaet Wien

  6. SESANS measures directly shape ridges

  7. Rotating and tilting fits expectations 15 • Conclusion • Exciting applications for SE in elastic scattering techniques • New fields of science

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