Compact directional radiation detector system
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United States of America Patent
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Nov 17, 2020
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app pub date -
Mar 26, 2020
filing date -
Apr 22, 2018
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Abstract
Disclosed is a directional gamma ray or neutron detector system that locates a radioactive source both horizontally and vertically. In some embodiments, the system comprises four “side” detectors arrayed around a detector axis, and an orthogonal “front” detector mounted frontward of the side detectors. Embodiments can calculate the azimuthal angle of the source based on the detection rates of the side detectors, while the polar angle of the source may be calculated from the front detector rate using a predetermined angular correlation function, thereby localizing the source from a single data set without iterative rotations. In applications such as hand-held survey meters, walk-through portals, vehicle cargo inspection stations, and mobile area scanners, embodiments enable rapid detection and precise localization of clandestine nuclear and radiological weapons.
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