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Figure 1
Sketch of the classical 3DXRD setup. Two types of detectors are used: high-spatial-resolution detectors close to the sample and a low-resolution detector far away from the sample. The Bragg angle, 2θ, the rotation angle, ω, and the azimuthal angle, η, are indicated for the diffracted beam arising from one grain of a coarse-grained specimen, and for a combination of two high-resolution detectors. The sketch is outdated in the sense that the beamstop now typically is removed, and the direct beam is transmitted through central holes in the two screens for possible tomography characterization by a fourth detector.

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