Application of energy-dispersive 2D detector to X-ray color imaging

A German group recently developed an X-ray fluorescence imaging system with a pnCCD-based camera. They performed a test using a laboratory 30 μm microfocus X-ray tube and synchrotron radiation at the BAM beamline, BESSY II. It was found that the system simultaneously records ca. 70,000 spectra with an energy resolution of 152 eV (at Mn Kα) with a spatial resolution of 50 μm over a viewing area of 12.7 mm squared. For more information on pnCCD detectors, for example, the following Web page could be useful, http://www.pnsensor.de/Welcome/Detector/pn-CCD/index.html For more information on the whole system for X-ray fluorescence imaging, see the paper, "Compact pnCCD-Based X-ray Camera with High Spatial and Energy Resolution: A Color X-ray Camera", O. Scharf et al., Anal. Chem., 83, 2532 (2011).