A preliminary communication on an inexpensive mass-produced high-dose polymeric dosimeter based on optically-stimulated luminescence

W. L. McLaughlin, S. D. Miller, M. C. Saylor, A. Kovács, L. Wojnárovits

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Polymeric thin films (0.5, 0.42, 0.25 and 0.08 mm thicknesses), containing a microcrystalline dispersion of a proprietary optically stimulated fluor in a plastic matrix, have been developed to measure and image high doses, using a simple, inexpensive table-top fluorimeter dedicated to a fast repetitive readout for large-scale routine dosimetry. The useable absorbed dose range of the system is 5 x 101 to 2 x 105 Gy, with an approximately linear function of relative light emission vs absorbed dose, and a random (type A) uncertainty (coverage factor 1) of dose interpretation of ~3%. The dosimeters are produced in very large reproducible quantities and provide a relatively fast simple analysis based on blue-light stimulation of stable, radiation-induced trapped-charged colour-centre states with emitted red-light photometric readout. Unlike thermoluminescence (TL), the optically stimulated luminescence (OSL) emission at room temperature does not appreciably anneal the luminescent centres, so that stored excited states in the radiation-induced colour centres are stable through many readout cycles, affording archival dosimetry data capability. Dosimeter stability, reproducibility, temperature dependence, humidity dependence, sensitivity to ambient light, and rate dependence are reported on.

Original languageEnglish
Pages (from-to)247-253
Number of pages7
JournalRadiation Physics and Chemistry
Volume55
Issue number3
DOIs
Publication statusPublished - Jul 1999

Fingerprint

dosimeters
communication
luminescence
readout
dosage
color centers
radiation
thermoluminescence
stimulation
light emission
humidity
plastics
temperature dependence
cycles
sensitivity
room temperature
matrices
thin films
excitation

ASJC Scopus subject areas

  • Radiation

Cite this

A preliminary communication on an inexpensive mass-produced high-dose polymeric dosimeter based on optically-stimulated luminescence. / McLaughlin, W. L.; Miller, S. D.; Saylor, M. C.; Kovács, A.; Wojnárovits, L.

In: Radiation Physics and Chemistry, Vol. 55, No. 3, 07.1999, p. 247-253.

Research output: Contribution to journalArticle

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