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Title: Environmental dosimeter of the thermoluminescent type

Abstract

A dosimeter for accurately monitoring normally low-energy radiation including a thermoluminescent CaF phosphor enclosed within a tantalum capsule is described. The tantalum acts as a filter to weaken the measured dose due to photons having energies below about 0.2 MeV. Tantalum end caps are maintained on the capsule body by a polyolefin sheath formed from heat-contractable tubing. After exposing the dosimeter to environmental radiation, it is placed in a shielded chamber for about 24 h and subsequently annealed at about 80 deg C to release radiation energy accumulated in low-temperature traps. The dosimeter is then disassembled and the phosphors photometrically read at temperatures about 50 deg C to determine the absorbed radiation dose. (Official Gazette)

Inventors:
;
Issue Date:
OSTI Identifier:
4310975
Patent Number(s):
3789227
Assignee:
to United States Atomic Energy Commission
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
NSA Number:
NSA-29-024306
Resource Type:
Patent
Resource Relation:
Patent File Date: 1973 May 18; Other Information: G01t1/11. Orig. Receipt Date: 30-JUN-74
Country of Publication:
United States
Language:
English
Subject:
N46120* -Instrumentation-Radiation Detection Instruments- Radiation Dosimeters; *ENVIRONMENT- RADIATION MONITORING; *THERMOLUMINESCENT DOSEMETERS- DESIGN; CALCIUM FLUORIDES

Citation Formats

Eichner, F N, and Kocher, L F. Environmental dosimeter of the thermoluminescent type. United States: N. p., 1974. Web.
Eichner, F N, & Kocher, L F. Environmental dosimeter of the thermoluminescent type. United States.
Eichner, F N, and Kocher, L F. Tue . "Environmental dosimeter of the thermoluminescent type". United States.
@article{osti_4310975,
title = {Environmental dosimeter of the thermoluminescent type},
author = {Eichner, F N and Kocher, L F},
abstractNote = {A dosimeter for accurately monitoring normally low-energy radiation including a thermoluminescent CaF phosphor enclosed within a tantalum capsule is described. The tantalum acts as a filter to weaken the measured dose due to photons having energies below about 0.2 MeV. Tantalum end caps are maintained on the capsule body by a polyolefin sheath formed from heat-contractable tubing. After exposing the dosimeter to environmental radiation, it is placed in a shielded chamber for about 24 h and subsequently annealed at about 80 deg C to release radiation energy accumulated in low-temperature traps. The dosimeter is then disassembled and the phosphors photometrically read at temperatures about 50 deg C to determine the absorbed radiation dose. (Official Gazette)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1974},
month = {1}
}