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15 Aug 2009

Volume 106, Issue 4, Articles (04xxxx)

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J. Appl. Phys. 106, 041101 (2009); http://dx.doi.org/10.1063/1.3207769 (21 pages)

Robert C. Runkle, L. Eric Smith, and Anthony J. Peurrung
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The photon haystack and emerging radiation detection technology

Robert C. Runkle, L. Eric Smith, and Anthony J. Peurrung

J. Appl. Phys. 106, 041101 (2009); http://dx.doi.org/10.1063/1.3207769 (21 pages) | Cited 8 times

Online Publication Date: 24 August 2009

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The resources devoted to interdicting special nuclear materials have increased considerably over the last several years in step with growing efforts to counter nuclear proliferation and nuclear terrorism. This changing landscape has led to a large amount of research and development that aims to improve the effectiveness of technology now deployed worldwide. Interdicting special nuclear materials is most commonly addressed by detecting and characterizing emitted gamma rays, but modest signature emissions can be obscured by attenuating material and must be differentiated from large and highly variable environmental background emissions. It is a daunting technical challenge to identify special nuclear materials via gamma-ray detection, but a host of new detection technologies is now emerging. This challenge motivates our review of special nuclear material signatures, the physics of detection approaches, emerging technologies, and performance metrics. The use of benchmark gamma-ray sources aids our discussion.
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29.40.-n Radiation detectors
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