Neutron coincidence detectors employing heterogeneous materials

Radiant energy – Invisible radiant energy responsive electric signalling – Neutron responsive means

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250366, 250367, 250369, 25039007, G01T 306

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052312909

ABSTRACT:
A neutron detector relies upon optical separation of different scintillators to measure the total energy and/or number of neutrons from a neutron source. In pulse mode embodiments of the invention, neutrons are detected in a first detector which surrounds the neutron source and in a second detector surrounding the first detector. An electronic circuit insures that only events are measured which correspond to neutrons first detected in the first detector followed by subsequent detection in the second detector. In spectrometer embodiments of the invention, neutrons are thermalized in the second detector which is formed by a scintillator-moderator and neutron energy is measured from the summed signals from the first and second detectors.

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