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Title: High-efficiency scintillation detector for combined of thermal and fast neutrons and gamma radiation

Abstract

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.

Inventors:
 [1];  [2];  [2]
  1. (Knoxville, TN)
  2. (Oak Ridge, TN)
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA
OSTI Identifier:
875227
Patent Number(s):
H590
Assignee:
United States of America as represented by Department of Energy (Washington, DC) SNL
DOE Contract Number:  
AC04-76
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
high-efficiency; scintillation; detector; combined; thermal; fast; neutrons; gamma; radiation; based; detection; high-energy; rays; single; detecting; unit; consists; pair; scintillators; sandwiched; optically; coupled; light; sensitive; photomultiplier; tube; tight; pervious; housing; disposed; portion; hold; arrangement; assembly; provides; window; adjacent; outer; scintillator; detected; enters; formed; material; scintillations; produced; thermal-neutrons; inner; pulses; events; produces; current; pulse; response; event; processed; conventional; manner; produce; count; rate; output; indicative; total; discrimination; techniques; distinguish; radiations; energy; distribution; pulses produced; thermal neutron; fast neutron; current pulse; scintillation detector; gamma rays; gamma ray; light pulses; radiation detector; gamma radiation; energy distribution; photomultiplier tube; optically coupled; thermal neutrons; light sensitive; light pulse; fast neutrons; current pulses; count rate; output indicative; detected radiation; detected event; energy neutrons; high-energy neutrons; conventional manner; energy neutron; multiplier tube; rate output; /250/

Citation Formats

Chiles, Marion M., Mihalczo, John T., and Blakeman, Edward D. High-efficiency scintillation detector for combined of thermal and fast neutrons and gamma radiation. United States: N. p., 1989. Web.
Chiles, Marion M., Mihalczo, John T., & Blakeman, Edward D. High-efficiency scintillation detector for combined of thermal and fast neutrons and gamma radiation. United States.
Chiles, Marion M., Mihalczo, John T., and Blakeman, Edward D. Sun . "High-efficiency scintillation detector for combined of thermal and fast neutrons and gamma radiation". United States. https://www.osti.gov/servlets/purl/875227.
@article{osti_875227,
title = {High-efficiency scintillation detector for combined of thermal and fast neutrons and gamma radiation},
author = {Chiles, Marion M. and Mihalczo, John T. and Blakeman, Edward D.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}

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