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

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 10 7 counts/s. This rea...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 2011-10, Vol.58 (5), p.2371-2377
Main Authors: Rinkel, J., Beldjoudi, G., Rebuffel, V., Boudou, C., Ouvrier-Buffet, P., Gonon, G., Verger, L., Brambilla, A.
Format: Article
Language:English
Subjects:
Arrays
Attenuation
Cadmium tellurides
Counting
Detectors
Energy resolution
Explosives
Linear arrays
Materials
Multidimensional methods
multidimensional signal processing
Photonics
Radiation detectors
Robustness
security
Spectra
spectrometry
Spectroscopy
Studies
x-ray detectors
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Summary: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 10 7 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.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2011.2164266