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We have developed a PIXE (Particle Induced X-ray Emission) spectrometer for light element analysis based on a Silicon Drift Detector and on a polycapillary lens. The polycapillary lens is needed to guarantee a good solid angle for X-ray detection while minimizing the rate of back-scattered protons impinging on the detector. To this aim we are using a polycapillary lens with the nominal focal spot...
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