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Experimental Evaluation of Material Identification Methods With CdTe X-ray Spectrometric Detector

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8 Author(s)
Rinkel, J. ; Rech. Technol., CEA-LETI-MINATEC, Grenoble, France ; Beldjoudi, G. ; Rebuffel, V. ; Boudou, C.
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This paper aims to experimentally evaluate a new material multidimensional method for material identification using a new CdTe spectrometric detector. LETI has developed a 16-channel fast read-out system capable of taking spectrometric measurements at count rates of more than 107 counts/s. This read-out system was coupled to CdTe linear array pixel detectors. A multidimensional analysis of the measured spectra has been conducted to perform material identification. The results show a decrease in false detection rate by a factor of up to 2 compared to an optimized dual counting approach applied on the same spectrometric raw data. Compared to a sandwich detector, the false detection rate decreases by a factor of more than 3 for thin objects. As a rule, the paper quantitatively demonstrates the continuous increase in performance and robustness with the number of detector energy counters.

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Nuclear Science, IEEE Transactions on  (Volume:58 ,  Issue: 5 )