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Figure 1
Diagram of a typical SANS experiment geometry at a continuous source, and angle/axis coordinates used by GRIP. An incident collimated and monochromated neutron beam comes from the left with wavevector k0. The sample is indicated by a gray hexagonal prism with local sample coordinates [{\hat{\bf x}_{\rm S}}], [{\hat{\bf y}_{\rm S}}], [{\hat{\bf z}_{\rm S}}] in red. The sense of rotation of the goniometer angles GRIP_dom, GRIP_san and GRIP_phi is indicated about the axes shown as dashed lines. Outgoing scattered neutrons at wavevector kf impinge upon a detector a distance d (several metres, not to scale) away. The laboratory coordinate system [{\hat{\bf x}_{\rm L}}], [{\hat{\bf y}_{\rm L}}], [{\hat{\bf z}_{\rm L}}] is indicated on the detector, along with the Bragg angle 2θ and the azimuthal angle ψ.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 57| Part 6| December 2024| Pages 2030-2042
https://doi.org/10.1107/S1600576724010379
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