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Figure 1
(a) The experimental setup. A λ = 4.4 Å neutron beam passes through a monochromator crystal, then through a phase grating whose effect is measured by an analyzer crystal and a 3He proportional counter. (b) From the measured diffraction intensity, the position-space phase is retrieved, providing the phase sinogram, which is then used to reconstruct the scattering-length density of the grating.

IUCrJ
Volume 7| Part 5| September 2020| Pages 893-900
ISSN: 2052-2525
https://doi.org/10.1107/S2052252520010295