Toward XRF-like chemical sensitivity in the laboratory: first hyperspectral x-ray imaging demonstration using the novel CITIUS detector (opens in new tab)

X-ray spectral imaging is an advanced technique that enables material-sensitive imaging by exploiting energy-dependent interactions with matter. In this context, X-ray fluorescence (XRF) represents the benchmark technique. Despite its excellent elemental sensitivity, however, XRF is intrinsically inefficient because it relies on the detection of isotropically emitted secondary fluorescence induced by a focused beam on the sample. This requirement makes the technique difficult to implement wit...