The Maia detector array was initially developed for high-resolution X-ray fluorescence imaging at synchrotrons. Today, thanks to the high brightness, tight emission regulation and well-fitted spectrum of the Excillum MetalJet X-ray source, this technique is possible to use also at a compact laboratory setup.
The MetalJet source was equipped with a polycapillary lens to give a 32 µm focus determining the spatial resolution. Using translation stages with long range, the sample can be scanned over large area in high resolution. The exposure time is kept low thanks to the high brightness MetalJet X-ray source and the high flux gain in the optics.
The example of a drill core sample shows the potential of the method to identify a multitude of elements simultaneously, in this case calcium, iron, manganese, rubidium, strontium and gold.