Dual-energy X-ray radiography for automatic high-Z material detection

✍ Scribed by Gongyin Chen; Gordon Bennett; David Perticone

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 188 KB
• Volume: 261
• Category: Article
• ISSN: 0168-583X
• DOI: 10.1016/j.nimb.2007.04.036

✦ Synopsis

There is an urgent need for high-Z material detection in cargo. Materials with Z > 74 can indicate the presence of fissile materials or radiation shielding. Dual (high) energy X-ray material discrimination is based on the fact that different materials have different energy dependence in X-ray attenuation coefficients. This paper introduces the basic physics and analyzes the factors that affect dual-energy material discrimination performance. A detection algorithm is also discussed.