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Proceedings Paper

Thermoluminescence characteristics of flat optical fiber in radiation dosimetry under different electron irradiation conditions
Author(s): A. Alawiah; A. M. Intan; S. Bauk; H. A. Abdul-Rashid; Z. Yusoff; M. R. Mokhtar; W. S. Wan Abdullah; K. A. Mat Sharif; G. A. Mahdiraji; F. R. Mahamd Adikan; N. Tamchek; N. M. Noor; D. A. Bradley
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Paper Abstract

Thermoluminescence (TL) flat optical fibers (FF) have been proposed as radiation sensor in medical dosimetry for both diagnostic and radiotherapy applications. A flat optical fiber with nominal dimensions of (3.226 × 3.417 × 0.980) mm3 contains pure silica SiO2 was selected for this research. The FF was annealed at 400°C for 1 h before irradiated. Kinetic parameters and dosimetric glow curve of TL response were studied in FF with respect to electron irradiation of 6 MeV, 15 MeV and 21 MeV using linear accelerator (LINAC) in the dose range of 2.0-10.0 Gy. The TL response was read using a TLD reader Harshaw Model 3500. The Time-Temperature-Profile (TTP) of the reader used includes; initial preheat temperature of 80°C, maximum readout temperature is 400°C and the heating rate of 30°Cs-1. The proposed FF shows excellent linear radiation response behavior within the clinical relevant dose range for all of these energies, good reproducibility, independence of radiation energy, independence of dose rate and exhibits a very low thermal fading. From these results, the proposed FF can be used as radiation dosimeter and favorably compares with the widely used of LiF:MgTi dosimeter in medical radiotherapy application.

Paper Details

Date Published: 3 May 2013
PDF: 12 pages
Proc. SPIE 8775, Micro-structured and Specialty Optical Fibres II, 87750S (3 May 2013); doi: 10.1117/12.2017209
Show Author Affiliations
A. Alawiah, Multimedia Univ. (Malaysia)
A. M. Intan, Multimedia Univ. (Malaysia)
S. Bauk, Univ. Sains Malaysia (Malaysia)
H. A. Abdul-Rashid, Multimedia Univ. (Malaysia)
Z. Yusoff, Multimedia Univ. (Malaysia)
M. R. Mokhtar, Multimedia Univ. (Malaysia)
W. S. Wan Abdullah, Malaysia Nuclear Agency (Malaysia)
K. A. Mat Sharif, Telekom Malaysia (Malaysia)
G. A. Mahdiraji, Univ. Malaya (Malaysia)
F. R. Mahamd Adikan, Univ. Malaya (Malaysia)
N. Tamchek, Univ. Putra Malaysia (Malaysia)
N. M. Noor, Univ. Putra Malaysia (Malaysia)
D. A. Bradley, Univ. of Surrey (United Kingdom)
Univ. Malaya (Malaysia)

Published in SPIE Proceedings Vol. 8775:
Micro-structured and Specialty Optical Fibres II
Kyriacos Kalli; Jiri Kanka; Alexis Mendez, Editor(s)

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