Patent
Portal radiation monitor
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TLDR
In this paper, a portal radiation monitor combines 0.1% FAR with high sensitivity to special nuclear material and utilizes pulse shape discrimination, dynamic compression of the photomultiplier output and scintillators sized to maintain efficiency over the entire portal area.Abstract:
A portal radiation monitor combines 0.1% FAR with high sensitivity to special nuclear material. The monitor utilizes pulse shape discrimination, dynamic compression of the photomultiplier output and scintillators sized to maintain efficiency over the entire portal area.read more
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Patent
Detection of nuclear materials
TL;DR: In this paper, a method for detecting Special Nuclear Materials (SNM) or Radiological dispersion Devices (RDD) is proposed, which conveying an object along a predetermined path, imaging a distribution of radioactive sources associated with the object as it passes along said path, determining the presence and location of one or both of an RDD or SNM radioactive source within the object.
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TL;DR: In this paper, a gamma ray detector consisting of a plastic scintillation body arranged to receive incident gamma rays to be detected is described, which can be usefully employed in portal radiation monitors.
References
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Patent
Three-dimensional time-of-flight gamma camera system
Robert J. Nickles,Hans O. Meyer +1 more
TL;DR: In this paper, a pair of fast acting elongated plastic scintillation bars are arranged in a skewed spatial relationship to define a unique tetrahedron in space which constitutes the positron sensitive volume of the camera.