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Sensitivity loss of Lif:Mg,Cu,P thermoluminescence dosemeters caused by oven annealing

Sensitivity loss of Lif:Mg,Cu,P thermoluminescence dosemeters caused by oven annealing LiF:Mg,Cu,P is a very sensitive thermoluminescence material that can be used for personal dosimetry in radiology. But if this material is heated too much during annealing or reading it quickly loses its sensitivity. This study shows that an annealing oven in wide use can cause thermal damage to the dosemeters owing to inhomogeneous temperature distribution in the annealing tray. At annealing temperatures >240°C, differences of only 1°C lead to significant losses of sensitivity. Therefore, it is necessary to measure the distribution of temperature in the annealing tray for correct placement of the dosemeters in the tray. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Radiation Protection Dosimetry Oxford University Press

Sensitivity loss of Lif:Mg,Cu,P thermoluminescence dosemeters caused by oven annealing

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References (7)

Publisher
Oxford University Press
Copyright
© The Author 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org
ISSN
0144-8420
eISSN
1742-3406
DOI
10.1093/rpd/ncl008
pmid
16464837
Publisher site
See Article on Publisher Site

Abstract

LiF:Mg,Cu,P is a very sensitive thermoluminescence material that can be used for personal dosimetry in radiology. But if this material is heated too much during annealing or reading it quickly loses its sensitivity. This study shows that an annealing oven in wide use can cause thermal damage to the dosemeters owing to inhomogeneous temperature distribution in the annealing tray. At annealing temperatures >240°C, differences of only 1°C lead to significant losses of sensitivity. Therefore, it is necessary to measure the distribution of temperature in the annealing tray for correct placement of the dosemeters in the tray.

Journal

Radiation Protection DosimetryOxford University Press

Published: Dec 10, 2006

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