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Title: Composition and apparatus for detecting gamma radiation

Abstract

A gamma radiation detector and a radioluminiscent composition for use therein. The detector includes a radioluminscent composition that emits light in a characteristic wavelength region when exposed to gamma radiation, and means for detecting said radiation. The composition contains a scintillant such as anglesite (PbSO.sub.4) or cerussite (PbCO.sub.3) incorporated into an inert, porous glass matrix via a sol-gel process. Particles of radiation-sensitive scintillant are added to, a sol solution. The mixture is polymerized to form a gel, then dried under conditions that preserve the structural integrity and radiation sensitivity of the scintillant. The final product is a composition containing the uniformly-dispersed scintillant in an inert, optically transparent and highly porous matrix. The composition is chemically inert and substantially impervious to environmental conditions including changes in temperature, air pressure, and so forth. It can be fabricated in cylinders, blocks with holes therethrough for flow of fluid, sheets, surface coatings, pellets or other convenient shapes.

Inventors:
 [1]
  1. (Aiken, SC)
Issue Date:
Research Org.:
WESTINGHOUSE SAVANNAH RIVER CO
OSTI Identifier:
869439
Patent Number(s):
5336889
Assignee:
United States of America as represented by United States (Washington, DC) SRS
DOE Contract Number:  
AC09-89SR18035
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
composition; apparatus; detecting; gamma; radiation; detector; radioluminiscent; therein; radioluminscent; emits; light; characteristic; wavelength; region; exposed; means; contains; scintillant; anglesite; pbso; cerussite; pbco; incorporated; inert; porous; glass; matrix; via; sol-gel; process; particles; radiation-sensitive; added; sol; solution; mixture; polymerized; form; dried; conditions; preserve; structural; integrity; sensitivity; final; product; containing; uniformly-dispersed; optically; transparent; highly; chemically; substantially; impervious; environmental; including; changes; temperature; air; pressure; forth; fabricated; cylinders; blocks; holes; therethrough; flow; fluid; sheets; surface; coatings; pellets; convenient; shapes; surface coating; sol-gel process; composition contains; wavelength region; emits light; chemically inert; optically transparent; radiation detector; gamma radiation; composition containing; structural integrity; environmental conditions; final product; glass matrix; air pressure; highly porous; surface coatings; characteristic wavelength; porous glass; porous matrix; radiation sensitivity; detecting gamma; /250/

Citation Formats

Hofstetter, Kenneth J. Composition and apparatus for detecting gamma radiation. United States: N. p., 1994. Web.
Hofstetter, Kenneth J. Composition and apparatus for detecting gamma radiation. United States.
Hofstetter, Kenneth J. Sat . "Composition and apparatus for detecting gamma radiation". United States. https://www.osti.gov/servlets/purl/869439.
@article{osti_869439,
title = {Composition and apparatus for detecting gamma radiation},
author = {Hofstetter, Kenneth J.},
abstractNote = {A gamma radiation detector and a radioluminiscent composition for use therein. The detector includes a radioluminscent composition that emits light in a characteristic wavelength region when exposed to gamma radiation, and means for detecting said radiation. The composition contains a scintillant such as anglesite (PbSO.sub.4) or cerussite (PbCO.sub.3) incorporated into an inert, porous glass matrix via a sol-gel process. Particles of radiation-sensitive scintillant are added to, a sol solution. The mixture is polymerized to form a gel, then dried under conditions that preserve the structural integrity and radiation sensitivity of the scintillant. The final product is a composition containing the uniformly-dispersed scintillant in an inert, optically transparent and highly porous matrix. The composition is chemically inert and substantially impervious to environmental conditions including changes in temperature, air pressure, and so forth. It can be fabricated in cylinders, blocks with holes therethrough for flow of fluid, sheets, surface coatings, pellets or other convenient shapes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}

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