Pulsed neutron detector

Details Pulsed neutron detector Pulsed neutron detector

1987-04-22

1989-03-21

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Neutron responsive means

250392, 25039001, G01T 306

Patent

active

048146234

ABSTRACT:
A pulsed neutron detector and system for detecting low intensity fast neutron pulses has a body of beryllium adjacent a body of hydrogenous material the latter of which acts as a beta particle detector, scintillator, and moderator. The fast neutrons (defined as having En>1.5 MeV) react in the beryllium and the hydrogenous material to produce larger numbers of slow neutrons than would be generated in the beryllium itself and which in the beryllium generate hellium-6 which decays and yields beta particles. The beta particles reach the hydrogenous material which scintillates to yield light of intensity related to the number of fast neutrons. A photomultiplier adjacent the hydrogenous material (scintillator) senses the light emission from the scintillator. Utilization means, such as a summing device, sums the pulses from the photo-multiplier for monitoring or other purposes.

REFERENCES:
patent: 2245787 (1941-06-01), Kallmann et al.

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