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Title: UTILIZATION OF PHOSWICH DETECTORS FOR SIMULTANEOUS, MULTIPLE RADIATION DETECTION

Abstract

A phoswich radiation detector is comprised of a phosphor sandwich in which several different phosphors are viewed by a common photomultiplier. By selecting the appropriate phosphors, this system can be used to simultaneously measure multiple radiation types (alpha, beta, gamma and/or neutron) with a single detector. Differentiation between the signals from the different phosphors is accomplished using digital pulse shape discrimination techniques. This method has been shown to result in accurate discrimination with highly reliable and versatile digital systems. This system also requires minimal component count (i.e. only the detector and a computer for signal processing). A variety of detectors of this type have been built and tested including: (1) a triple phoswich system for alpha/beta/gamma swipe counting, (2) two well-type detectors for measuring low levels of low energy photons in the presence of a high energy background, (3) a large area detector for measuring beta contamination in the presence of a photon background, (4) another large area detector for measuring low energy photons from radioactive elements such as uranium in the presence of a photon background. An annular geometry, triple phoswich system optimized for measuring alpha/beta/gamma radiation in liquid waste processing streams is currently being designed.

Authors:
;
Publication Date:
Research Org.:
University of Missouri-Columbia (US)
Sponsoring Org.:
USDOE Office of Science and Technology (OST) (EM-50) (US)
OSTI Identifier:
821938
Report Number(s):
Technical Paper No. 2
TRN: US0401326
DOE Contract Number:  
FG07-01ID14118
Resource Type:
Journal Article
Resource Relation:
Journal Name: Methods and Applications of Radioanalytical Chemsitry; Other Information: Submitted to Methods and Applications of Radioanalytical Chemistry; PBD: 15 Apr 2003
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; COMPUTERS; CONTAMINATION; DIGITAL SYSTEMS; GEOMETRY; LIQUID WASTES; PHOSPHORS; PHOTONS; PROCESSING; RADIATION DETECTION; RADIATION DETECTORS; RADIATIONS; SHAPE; URANIUM; PHOSWICH DETECTORS; MCNP

Citation Formats

William H. Miller, and Manuel Diaz de Leon. UTILIZATION OF PHOSWICH DETECTORS FOR SIMULTANEOUS, MULTIPLE RADIATION DETECTION. United States: N. p., 2003. Web.
William H. Miller, & Manuel Diaz de Leon. UTILIZATION OF PHOSWICH DETECTORS FOR SIMULTANEOUS, MULTIPLE RADIATION DETECTION. United States.
William H. Miller, and Manuel Diaz de Leon. Tue . "UTILIZATION OF PHOSWICH DETECTORS FOR SIMULTANEOUS, MULTIPLE RADIATION DETECTION". United States. https://www.osti.gov/servlets/purl/821938.
@article{osti_821938,
title = {UTILIZATION OF PHOSWICH DETECTORS FOR SIMULTANEOUS, MULTIPLE RADIATION DETECTION},
author = {William H. Miller and Manuel Diaz de Leon},
abstractNote = {A phoswich radiation detector is comprised of a phosphor sandwich in which several different phosphors are viewed by a common photomultiplier. By selecting the appropriate phosphors, this system can be used to simultaneously measure multiple radiation types (alpha, beta, gamma and/or neutron) with a single detector. Differentiation between the signals from the different phosphors is accomplished using digital pulse shape discrimination techniques. This method has been shown to result in accurate discrimination with highly reliable and versatile digital systems. This system also requires minimal component count (i.e. only the detector and a computer for signal processing). A variety of detectors of this type have been built and tested including: (1) a triple phoswich system for alpha/beta/gamma swipe counting, (2) two well-type detectors for measuring low levels of low energy photons in the presence of a high energy background, (3) a large area detector for measuring beta contamination in the presence of a photon background, (4) another large area detector for measuring low energy photons from radioactive elements such as uranium in the presence of a photon background. An annular geometry, triple phoswich system optimized for measuring alpha/beta/gamma radiation in liquid waste processing streams is currently being designed.},
doi = {},
journal = {Methods and Applications of Radioanalytical Chemsitry},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 15 00:00:00 EDT 2003},
month = {Tue Apr 15 00:00:00 EDT 2003}
}