NDLI: Explosives detection using dual energy X-ray imaging and photoneutron analysis

Content Provider	IEEE Xplore Digital Library
Author	Yigang Yang Tiezhu Li Yuanjing Li
Copyright Year	2009
Description	Author affiliation: Department of Engineering Physics, Tsinghua University, Beijing, P.R. China (Yigang Yang; Yuanjing Li) \|\| Nuctech Company Limited, Beijing, P.R. China (Tiezhu Li)
Abstract	To find the explosives concealed in cargos, X-ray penetration information and neutron induced γ information are both helpful. The combination of them would improve the capability of explosives detection in complex situation like metal shielded or other organic materials disturbed. In this paper, we present the research of combining dual energy X-ray imaging and photoneutron induced γ-ray analysis. The former technique provides the materials identification capability based on effective atomic number that indicates organic, light metal, inorganic and heavy metal areas. The area containing organic material will be suspected further that will undergo neutron analysis. High energy X-ray induced photoneutron analysis provides the 2-dimensional elemental distribution of hydrogen, nitrogen and iron. Area wealthy of nitrogen and hydrogen element may be suspected as to be explosive. Several different shielding situations are researched in the experiments to evaluate the explosive detection capability, including explosive standing alone, shielded by 2cm iron plate, surrounded by sugar and so on. 9MeV and 6MeV X-ray pulses are produced interlaced with 5μs pulsed width and 3000rad/min@1m to form dual energy X-ray image. Neutrons are produced by X-ray with 20kg heavy water converter. The experiments results show that areas of organic materials could be first notified by dual energy imaging effectively, then the 2-dimensional elements information of nitrogen and hydrogen are used to confirm the existence of explosive.
Starting Page	876
Ending Page	878
File Size	399764
Page Count	3
File Format	PDF
ISBN	9781424439614
ISSN	10957863
DOI	10.1109/NSSMIC.2009.5402457
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Explosives X-ray detection X-ray detectors X-ray imaging Image analysis Organic materials Neutrons Hydrogen Nitrogen Iron
Content Type	Text
Resource Type	Article

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