Portable and autonomous X-ray equipment for in-situ threat materials identification by effective atomic number high-accuracy measurement

M. Iovea; M. Neagu; G. Mateiasi; O. Duliu

doi:10.1117/12.883666

23 May 2011 Portable and autonomous X-ray equipment for in-situ threat materials identification by effective atomic number high-accuracy measurement

M. Iovea, M. Neagu, G. Mateiasi, O. Duliu

Author Affiliations +

Proceedings Volume 8017, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XVI; 801713 (2011) https://doi.org/10.1117/12.883666
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

A novel portable and autonomous X-ray dual-energy Radioscopy equipment, developed for bomb squad interventions and NDT applications and capable of in-situ digital radiography imaging with measurement of the effective Atomic number of materials (Z_eff), is presented. The system consists of a 2D dual-energy X-ray detector based on a rapidly translated linear array, a portable X-ray source and dedicated software running on a laptop or tablet PC. By measurement of the collected x-ray intensities at two different energy spectra, the system can directly compute the material Z_eff value for various organic materials contained in the scanned object and then identify them from a database list. The entire system calibration has been obtained using explosive simulants with known Z_eff values, the measurement error of Z_effbeing around ±3.5 % with respect to the reference values. The excellent image resolution and the ability of the automated threat identification algorithm are presented for experiments with a briefcase and a hand-held baggage having various domestic objects and an explosive simulant inside.

Citation Download Citation

M. Iovea, M. Neagu, G. Mateiasi, and O. Duliu "Portable and autonomous X-ray equipment for in-situ threat materials identification by effective atomic number high-accuracy measurement", Proc. SPIE 8017, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XVI, 801713 (23 May 2011); https://doi.org/10.1117/12.883666

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