Figure 4
XRF sum spectrum of thin-film standard RF11 prepared by AXO Dresden GmbH measured over an area of 1 mm × 1 mm with 4 µm pixel size and a dwell time of 20 ms per pixel at an incident energy of 12 keV, thus a total of 1250 s. The gray dotted line shows a full XRF spectrum collected at a single image pixel for 20 ms. |