alexa Review of doped silica glass optical fibre: their TL properties and potential applications in radiation therapy dosimetry.
Engineering

Engineering

International Journal of Sensor Networks and Data Communications

Author(s): Bradley DA, Hugtenburg RP, Nisbet A, Abdul Rahman AT, Issa F,

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Abstract Review is made of dosimetric studies of Ge-doped SiO(2) telecommunication fibre as a 1-D thermoluminescence (TL) system for therapeutic applications. To-date, the response of these fibres has been investigated for UV sources, superficial X-ray beam therapy facilities, a synchrotron microbeam facility, electron linear accelerators, protons, neutrons and alpha particles, covering the energy range from a few eV to several MeV. Dosimetric characteristics include, reproducibility, fading, dose response, reciprocity between TL yield and dose-rate and energy dependence. The fibres produce a flat response to fixed photon and electron doses to within better than 3\% of the mean TL distribution. Irradiated Ge-doped SiO(2) optical fibres show limited signal fading, with an average loss of TL signal of ~0.4\% per day. In terms of dose response, Ge-doped SiO(2) optical fibres have been shown to provide linearity to x and electron doses, from a fraction of 1 Gy up to 2 kGy. The dosimeters have also been used in measuring photoelectron generation from iodinated contrast media; TL yields being some 60\% greater in the presence of iodine than in its absence. The review is accompanied by previously unpublished data. Copyright © 2012 Elsevier Ltd. All rights reserved. This article was published in Appl Radiat Isot and referenced in International Journal of Sensor Networks and Data Communications

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