Document Type
Article (Restricted)
Publication Date
1-1-2015
Abstract
Pure silica optical flat fibers (FF) have been proposed as the basis for a novel radiation sensor by the measurement of the thermoluminescence (TL) produced. In this paper the 17, performance of the FFs were studied. Using a linear accelerator (LINAC) delivering doses in the range 0.2-10.0 Gy, the TL dosimetric glow curves of the FFs were studied with respect to 6 MeV electron and 6 MV photon beams. When exposed to 6 MeV electron irradiation, the pure silica FFs displayed a supralinear response starting from 2 Gy up to 10.0 Gy. While for 6 MV photon irradiation, the FFs shows linear characteristic (f(D) = 1) nearly up to 2 Gy. The TL intensity (I-m) of the main peak of FFs is 1.5 times higher for 6 MeV electron beams than for 6 MV photon beams. The maximum peak temperature (T-m) it is not affected by the type of irradiation used at the same dose while the maximum TL intensity (I-m) was found to be dependent on the type of radiation used. Overall results indicate that the pure silica FFs can be used as radiation sensors in the high-dose therapy dosimetry. (C) 2014 Elsevier Ltd. All rights reserved.
Keywords
Thermoluminescence, Flat fiber, Pure silica, Glow curve, Kinetic parameters, Dose response
Divisions
fac_eng
Funders
FRGS Research Grant under the Ministry of Higher Education (MOHE), Malaysia Q3 EP20120521004 ,University of Malaya-Ministry of Higher Education UM-MOHE High Impact Research Grant H-21001-00-F000033,MOHE HIR Grant A000007-50001
Publication Title
Radiation Physics and Chemistry
Volume
106
Publisher
Elsevier
Additional Information
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