High-efficiency scintillation detector for combined detection 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 event count rate. Pulse discrimination techniques may be used to distinguish the different radiations and their energy distribution.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- Assignee:
- TIC; EDB-88-179255
- Patent Number(s):
- PATENTS-US-A6019738
- OSTI ID:
- 6807626
- 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
SCINTILLATOR
Related Subjects
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BARYONS
DESIGN
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FAST NEUTRONS
FERMIONS
GAMMA RADIATION
HADRONS
INVENTIONS
IONIZING RADIATIONS
MEASURING INSTRUMENTS
NEUTRONS
NUCLEONS
RADIATION DETECTORS
RADIATIONS
SCINTILLATION COUNTERS
SOLID SCINTILLATION DETECTORS
THERMAL NEUTRONS