Physics – Instrumentation and Detectors
Scientific paper
2002-07-23
Physics
Instrumentation and Detectors
LaTeX2e, 10 pages, 8 eps figures, presented at the 8th ECNDT (Barcelona, Spain, June 17-21, 2002)
Scientific paper
Results of experimental studies of detector arrays S-PD (scintillator-photodiode) and PRD (scintillator-photoreceiving device) used for X-ray digital radiography have shown that there exist further possibilities to increase spatial resolution of this system up to 2-3 line pairs per mm. Theoretical analysis and experimental studies show that the two-energy detection method not only allows one to detect organics on the background of metal, but also substantially increases (by 3-5 times) the detection ability of the system as a whole, especially if parameters of the S-PD pair are optimized, in particular, when ZnSe(Te) is used in the low-energy circuit. A possibility to distinguish, in principle, between substances with insignificant differences in atomic number has been theoretically proven -- by transition to multi-energy radiography. 3D-imaging has been realized using S-PD detector arrays.
Kozin D. N.
Kulik T. V.
Lisetskaya E. K.
Naydenov Sergei V.
Opolonin A. D.
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