High-efficiency scintillation detector for combined of thermal and fast neutrons and gamma radiation
A scintillation based radiation detector for the combined detection of thermal neutrons, high-energy neutrons and gamma rays in a single detecting unit. The detector consists of a pair of scintillators sandwiched together and optically coupled to the light sensitive face of a photomultiplier tube. A light tight radiation pervious housing is disposed about the scintillators and a portion of the photomultiplier tube to hold the arrangement in assembly and provides a radiation window adjacent the outer scintillator through which the radiation to be detected enters the detector. The outer scintillator is formed of a material in which scintillations are produced by thermal-neutrons and the inner scintillator is formed of a material in which scintillations are produced by high-energy neutrons and gamma rays. The light pulses produced by events detected in both scintillators are coupled to the photomultiplier tube which produces a current pulse in response to each detected event. These current pulses may be processed in a conventional manner to produce a count rate output indicative of the total detected radiation even count rate. Pulse discrimination techniques may be used to distinguish the different radiations and their energy distribution.
- Research Organization:
- US Dept. of Energy (USDOE), Washington, DC (United States)
- Sponsoring Organization:
- USDOE
- Assignee:
- The United States of America as represented by the United States Department of Energy (Washington, DC)
- Patent Number(s):
- H000590
- Application Number:
- 07/019738
- OSTI ID:
- 1176594
- Country of Publication:
- United States
- Language:
- English
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High-efficiency scintillation detector for combined of thermal and fast neutrons and gamma radiation
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