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Radiation Protection Dosimetry Advance Access originally published online on April 27, 2006
Radiation Protection Dosimetry 2006 119(1-4):323-326; doi:10.1093/rpd/nci646
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© The Author 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Use of composites of topaz–glass as TSEE and TL dosemeters

C. M. S. de Magalhães1, D. N. Souza1,* and L. V. E. Caldas2

1 Universidade Federal de Sergipe, Departamento de Física, 49100-000 São Cristóvão, SE, Brazil
2 Instituto de Pesquisas Energéticas e Nucleares, Comissão Nacional de Energia Nuclear, Av. Prof. Lineu Prestes 2242, Cidade Universitária, 05508-000 São Paulo, SP, Brazil

* Corresponding author: dnsouza{at}fisica.ufs.br

The properties of the thermally stimulated exoelectron emission (TSEE) and thermoluminescent (TL) emission of topaz–glass composites were studied with the aim of using them as solid-state dosemeters. The TSEE response was studied as a function of radiation energy and as a function of absorbed dose. Topaz–glass composites presented a linear TL and TSEE response to dose within a range of 0.01–1 Gy. The topaz–glass composites presented higher TSEE peaks than topaz–Teflon pellets. In the dosimetry of radiotherapic fields normally the responses of the topaz–glass dosemeters are comparable to topaz–Teflon pellets. The results confirmed that these new dosemeters can be useful in monitoring the quality of the radiation sources. This dose mapping technique is particularly useful in investigating dose distribution throughout a planned target volume.


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