Potential application of pure silica optical flat fibers for radiation therapy dosimetry

Alawiah, A. and Bauk, S. and Abdul-Rashid, H.A. and Gieszczyk, W. and Hashim, S. and Mandiraji, G.A. and Tamchek, N. and Bradley, D.A. (2015) Potential application of pure silica optical flat fibers for radiation therapy dosimetry. Radiation Physics and Chemistry, 106. pp. 73-76. ISSN 0969-806X, DOI https://doi.org/10.1016/j.radphyschem.2014.06.006.

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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.

Item Type:	Article
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
Additional Information:	As7fk Times Cited:0 Cited References Count:10
Uncontrolled Keywords:	Thermoluminescence; Flat fiber; Pure silica; Glow curve; Kinetic parameters; Dose response
Subjects:	T Technology > T Technology (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:	Faculty of Engineering
Depositing User:	Mr Jenal S
Date Deposited:	02 Sep 2015 01:14
Last Modified:	02 Sep 2015 01:14
URI:	http://eprints.um.edu.my/id/eprint/13884

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