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Figure 5
Quartz–Pd on- and off-coincidence spectra acquired using the mudstone rock sample shown in Fig. 4[link](a) mounted in three different positions: a reference position, rotated by 30° about the axis passing through the analysed surface of the sample and perpendicular to the plane of the experiment, and shifted by 2 mm away from the X-ray source. The source excitation conditions were 8 kV and 0.45, 0.38 and 0.47 mA, respectively. The on- and off-coincidence spectra are shown as solid and dashed lines, respectively. The spectra have been scaled to have equal K Kα fluorescence peak intensities. Each data set was acquired over 3 h with the Rh foil mounted in the incident beam.

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CRYSTALLOGRAPHY
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