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Proceedings Paper

Portable and autonomous X-ray equipment for in-situ threat materials identification by effective atomic number high-accuracy measurement
Author(s): M. Iovea; M. Neagu; G. Mateiasi; O. Duliu
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Paper 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 (Zeff), 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 Zeff 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 Zeff values, the measurement error of Zeffbeing 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.

Paper Details

Date Published: 23 May 2011
PDF: 8 pages
Proc. SPIE 8017, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XVI, 801713 (23 May 2011); doi: 10.1117/12.883666
Show Author Affiliations
M. Iovea, ACCENT PRO 2000 s.r.l. (Romania)
M. Neagu, ACCENT PRO 2000 s.r.l. (Romania)
G. Mateiasi, ACCENT PRO 2000 s.r.l. (Romania)
O. Duliu, Univ. of Bucharest (Romania)

Published in SPIE Proceedings Vol. 8017:
Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XVI
Russell S. Harmon; John H. Holloway Jr.; J. Thomas Broach, Editor(s)

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