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![[Figure 1]](bf5009fig1mag.jpg)
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Figure 1
(a) Ewald sphere construction of surface reciprocal space, including both specular and non-specular rods, showing the incident and reflected X-ray beam, the momentum transfer Q = Kf − Ki and the scattering angle 2θ. (b) Schematic of a rocking scan in which the sample angle is rotated as the detector is held fixed. This effectively scans the detector resolution function across the crystal truncation rod resulting in a peak superimposed on flat background. (c) Schematic of the use of a CCD detector to image the reflected X-ray beam, in which the specularly reflected beam appears as a spot (red region) on a flat background count rate (green hatched region) with the sample and detector held fixed. |
![[Figure 1]](bf5009fig1.jpg)
 | JOURNAL OF SYNCHROTRON RADIATION |
ISSN: 1600-5775
