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![[Figure 4]](iy5001fig4mag.jpg)
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Figure 4
(Left) Definition of the rotation axes A, B and Γ for the first, second and third rotary stages, as well as the definition of the XYZ coordinates. The X axis aligns with the incident X-rays, the XY-plane corresponds to the horizontal scattering plane, and consequently the Y axis is along the direction of 2θ = 90°. The Γ axis (the direction of the connecting flange) should align with the spectrometer to pass the emitted X-rays. (Right) Definition of the angles Δ1 and Δ2 between the A and B axes and B and Γ axes, respectively. Additionally, the direction and 0° position of rotation α, β and γ around the three axes A, B and Γ are defined. At α = β = γ = 0°, 2θ becomes 90° − (Δ1 + Δ2). |
![[Figure 4]](iy5001fig4.jpg)
 | JOURNAL OF SYNCHROTRON RADIATION |
ISSN: 1600-5775
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