High reslolution Larmor diffraction

High resolution Larmor diffraction will use the same components as SESANS but at wide-angle diffraction configuration and with the two precession fields in the same direction, shown in the figure, measuring lattice  spacings Δd/d with accuracies as high as high as 10‑6. When the fields are anti parallel, the setup is in “SESANS configuration” and measures with very high accuracy the broadening of the Bragg peaks. In this configuration, by having the detector at one scattering angle and when examining a polycrystalline sample more Bragg peaks can be measured simultaneously due to the time-of-flight technique and the broad wavelength band of LARMOR. This technique can also determine local strains and yield information about the size and size distribution of nano crystallites in nano structured materials.

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