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Improved detection of weapons of mass destruction is one of the Science and Technology priorities of the Secretary of Defense for Fiscal Years 2013–2017. Unfortunately, the remote detection of special nuclear materials is difficult because the materials are not very radioactive, the radiation signatures decrease rapidly with distance, and faint sources of radiation can be obscured by naturally occurring...
We report on the initial characterization efforts for an active interrogation detection system (ACTINIDES) for applications in maritime security. The ACTINIDES concept is based on neutron/gamma-ray detection, measurement and imaging using a coded aperture mask and an array of liquid scintillator detectors. The coded mask is based on a modified uniformly redundant array (MURA) with hybrid mask elements...
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