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Figure 4
A schematic showing the measurement method by sample rotation. The sample rotates around the φ axis, usually by 360°, while the ω axis is fixed. When the unit step width of rotation is 0.2°, then one frame of the image data contains all the reciprocal points in that step width, Δφ = 0.2°. The detector range in diffraction angle 2θB is 110° and so a two-step measurement is needed to cover a full diffraction range up to 160°.

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