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Scintillator-photodiode type detectors for multi-energy scanning introscopy

V. D. Ryzhikov·S. V. Naydenov·D. N. Kozin·E. K. Lisetskaya·A. D. Opolonin·V. M. Svishch·T. V. Kulik
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Abstract

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.

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V. D. Ryzhikov, S. V. Naydenov, D. N. Kozin, E. K. Lisetskaya, A. D. Opolonin, V. M. Svishch, T. V. Kulik. 2002-07-23. Scintillator-photodiode type detectors for multi-energy scanning introscopy. https://arxiv.org/abs/physics/0207089

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