A multi-energy method of nondestructive testing by determination of the effective atomic number of different materials

Volodymyr D. Ryzhikov; Oleksandr D. Opolonin; Sergiy M. Galkin; Yevgeniy F. Voronkin; Olena K. Lysetska; Serhiy A. Kostioukevitch

doi:10.1117/12.858267

27 August 2010 A multi-energy method of nondestructive testing by determination of the effective atomic number of different materials

Volodymyr D. Ryzhikov, Oleksandr D. Opolonin, Sergiy M. Galkin, Yevgeniy F. Voronkin, Olena K. Lysetska, Serhiy A. Kostioukevitch

Author Affiliations +

Proceedings Volume 7805, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XII; 78051P (2010) https://doi.org/10.1117/12.858267
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

Development and studies of characteristics are reported for X-ray radiation detectors of "scintillator-photodiode" type showing improved spatial resolution with photosensitive area step of 1.6, 0.8, 0.4 and 0.2 mm and number of channels 16, 32, 128 and 256, respectively. The receiving-detecting channel has been adjusted and tested, appropriate software has been developed, and shadow X-ray images of tested objects were obtained. Evaluations were made of spatial resolution, resolution over thickness and detecting ability of the digital radiographic sysyem based on the detector array. Recommendations are formulated on application of such devices for non-destructive testing and technical diagnostics. Further studies on obtaining two-energy images show possibilities of substantial broadening of the application fields of the digital radiographic system, allowing determination of the effective atomic number Z_eff for component substances of the tested objects. A possibility is shown of substance discrimination by their effective atomic number even for "light" elements with Z_eff from 6 to 13. Clear distinction could be observed between such substances as water (H₂O) with Z_eff≈7.43 and glycerol (CH₂OHCHOHCH₂OH) with Z_eff≈ 6.87.

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Volodymyr D. Ryzhikov, Oleksandr D. Opolonin, Sergiy M. Galkin, Yevgeniy F. Voronkin, Olena K. Lysetska, and Serhiy A. Kostioukevitch "A multi-energy method of nondestructive testing by determination of the effective atomic number of different materials", Proc. SPIE 7805, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XII, 78051P (27 August 2010); https://doi.org/10.1117/12.858267

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