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14 September 2006 Hard X-ray devices for target detection at longer distances
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Detecting and identifying organic and metallic targets at distances from 50 m to 100 m is difficult for hard X-ray detection devices, especially when targets (such as improvised explosive devices (IEDs)) are concealed behind metal (steel) and non-metal (plastic, wood, rocks, soil, etc.) walls. At least two problems are inherent to detection at such long distances: (1) the air attenuation of X-rays, which can be significant for standoff distances of x = 50 m (100 m total for 2x); and (2) a scattering factor proportional to x4 that comes from the divergence of X-rays propagating from a source to a target and X-rays backscattering from a target (usually, Compton backscattering in low Z-number materials). The compensation of these factors by novel lobster-eye hard X-ray optics is analyzed in this paper. The analysis and the optimization of the hard X-ray lobster eye lens for realistic parameters are also discussed.
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Michael Gertsenshteyn, Victor Grubsky, and Tomasz Jannson "Hard X-ray devices for target detection at longer distances", Proc. SPIE 6319, Hard X-Ray and Gamma-Ray Detector Physics and Penetrating Radiation Systems VIII, 63190F (14 September 2006);


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