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Figure 4
Top: sensitivities for the K-lines, lower limits of detection (inset table) and sum spectrum (inset) of 36 (6 × 6) pixels measured on the NIST Standard Reference Material 1412 (Multicomponent Glass) with 12.7 keV monochromatic excitation. Iron is marked in gray as it is just a reference and not a certified value. Bottom: distribution maps for Ca, K, Fe and Zn showing the homogeneity of the SRM. The distance between pixels was 10 µm. The measurement time per pixel was 20 s.

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SYNCHROTRON
RADIATION
ISSN: 1600-5775
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