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Title: System for use with solid state dosimeter

Abstract

The present invention constitutes a system for determining the amounts of ionizing radiation to which dosimeters using thermoluminescent materials have been exposed. In accordance with this system, the thermoluminescent materials which comprise the dosimeters are first cooled by contact with a cryogenic substance such as liquified nitrogen. The thermoluminescent materials are then optically stimulated by exposure to ultraviolet light. Thereafter, the amounts of visible light emitted by the thermoluminescent materials are detected and counted as the materials are allowed to warm up to room temperature. The amounts of luminescence exhibited by the materials are related to radiation exposure and provide a sensitive measure of radiation dosage. It has been discovered that the above procedure is most effective when heavily doped thermoluminescent materials are used and that the procedure allows many useful plastic materials to now be employed in dosimeter constructions.

Inventors:
 [1];  [2];  [3];  [1]
  1. Richland, WA
  2. Pasco, WA
  3. Kennewick, WA
Issue Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA
OSTI Identifier:
867515
Patent Number(s):
4954707
Assignee:
Battelle Memorial Institute (OH)
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
solid; dosimeter; constitutes; determining; amounts; ionizing; radiation; dosimeters; thermoluminescent; materials; exposed; accordance; comprise; cooled; contact; cryogenic; substance; liquified; nitrogen; optically; stimulated; exposure; ultraviolet; light; thereafter; visible; emitted; detected; counted; allowed; warm; temperature; luminescence; exhibited; related; provide; sensitive; measure; dosage; discovered; procedure; effective; heavily; doped; allows; useful; plastic; employed; constructions; plastic material; plastic materials; luminescent material; thermoluminescent material; heavily doped; ultraviolet light; visible light; ionizing radiation; light emitted; radiation exposure; violet light; luminescent materials; /250/

Citation Formats

Miller, Steven D, McDonald, Joseph C, Eichner, Fred N, and Tomeraasen, Paul L. System for use with solid state dosimeter. United States: N. p., 1990. Web.
Miller, Steven D, McDonald, Joseph C, Eichner, Fred N, & Tomeraasen, Paul L. System for use with solid state dosimeter. United States.
Miller, Steven D, McDonald, Joseph C, Eichner, Fred N, and Tomeraasen, Paul L. Mon . "System for use with solid state dosimeter". United States. https://www.osti.gov/servlets/purl/867515.
@article{osti_867515,
title = {System for use with solid state dosimeter},
author = {Miller, Steven D and McDonald, Joseph C and Eichner, Fred N and Tomeraasen, Paul L},
abstractNote = {The present invention constitutes a system for determining the amounts of ionizing radiation to which dosimeters using thermoluminescent materials have been exposed. In accordance with this system, the thermoluminescent materials which comprise the dosimeters are first cooled by contact with a cryogenic substance such as liquified nitrogen. The thermoluminescent materials are then optically stimulated by exposure to ultraviolet light. Thereafter, the amounts of visible light emitted by the thermoluminescent materials are detected and counted as the materials are allowed to warm up to room temperature. The amounts of luminescence exhibited by the materials are related to radiation exposure and provide a sensitive measure of radiation dosage. It has been discovered that the above procedure is most effective when heavily doped thermoluminescent materials are used and that the procedure allows many useful plastic materials to now be employed in dosimeter constructions.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

Patent:

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