Comparison of thermoluminescence response of different sized Ge-doped flat fibers as a dosimeter

被引：9
作者：
Begum, Mahfuza [1 ,2 ]
Rahman, A. K. M. Mizanur [1 ,2 ]
Abdul-Rashid, H. A. [1 ]
Yusoff, Z. [1 ]
Mat-Sharif, K. A. [1 ]
Zulkifli, M. I. [1 ]
Muhamad-Yasin, S. Z. [1 ]
Ung, N. M. [1 ,3 ]
Kadir, A. B. A. [4 ]
Amin, Y. M. [5 ]
Bradley, D. A. [6 ]
机构：
[1] Multimedia Univ, Fac Engn, Cyberjaya, Malaysia
[2] Bangladesh Atom Energy Commiss, Dhaka, Bangladesh
[3] Univ Malaya, Clin Oncol Unit, Fac Med, Kuala Lumpur 50603, Malaysia
[4] Agensi Nuklear Malaysia, SSDL, Bangi, Kajang, Malaysia
[5] Univ Malaya, Fac Sci, Phys, Kuala Lumpur 50603, Malaysia
[6] Univ Surrey, Dept Phys, Guildford GU2 5XH, Surrey, England
来源：
RADIATION PHYSICS AND CHEMISTRY | 2015年 / 116卷
关键词：
Thermo luminescence; Photon beam; Linear accelerator (LINAC); Ge-doped flat fiber; Threshold dose; OPTICAL-FIBER; PHOTON;
D O I：
10.1016/j.radphyschem.2015.03.038
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Prime dosimetric properties, including dose-response, linearity with dose, energy response, fading and threshold doses were investigated for three different dimension Ge-doped flat fibers. The results of measurement were also compared with two of the more commonly used standard TLD media, TLD-100 (LiF:Mg,Ti-7.5%(LiF)-Li-6) and TLD-700 ((LiF)-Li-7:Mg,Ti 99.9%(LiF)-Li-7) chips. The flat cross-section samples (60 x 180) mu m(2), (100 x 350) mu m(2) and (200 x 750) mu m(2) were fabricated using the Modified Chemical Vapor Deposition (MCVD) process and pulled from the same "preform." In the study, all flat fiber samples provided good linear dose-response for the photon and electron beams generated using a medical linear accelerator (LINAC), for doses in the range 0.5-8 Gy. Among the samples, the smallest dimension flat fiber provided the best response, with a sensitivity of some 61% and 54%, respectively of that of the TLD-100 and TLD-700 chips. The energy responses of the samples were studied for various photon (6 MV, 10 MV) and electron (6 MeV, 9 MeV) beam energies. it fading of around 20% was observed over a period of thirty (30) days. These favorable TL characteristics point towards promising development of Ge-doped flat fibers for use in radiotherapy dosimetry. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：155 / 159
页数：5
相关论文
共 22 条
[1]  
Abdul Rahman A. T., 2011, 8 IND RAD RAD MEAS A
[2]  
Abdulla Y. A., 2002, Journal of Radiological Protection, V22, P417, DOI 10.1088/0952-4746/22/4/306
[3]   The thermoluminescence response of Ge-doped optical fibre subjected to photon irradiation [J].
Abdulla, YA ;
Amin, YM ;
Bradley, DA .
RADIATION PHYSICS AND CHEMISTRY, 2001, 61 (3-6) :409-410
[4]   Direct UV Written Optical Waveguides in Flexible Glass Flat Fiber Chips [J].
Adikan, Faisal Rafiq Mahamd ;
Sandoghchi, Seyed Reza ;
Yi, Chong Wu ;
Simpson, Robert Edward ;
Mahdi, Mohd Adzir ;
Webb, Andrew Simon ;
Gates, James Christopher ;
Holmes, Christopher .
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 2012, 18 (05) :1534-1539
[5]  
[Anonymous], IAEA SAF STAND SER
[6]   Review of doped silica glass optical fibre: Their TL properties and potential applications in radiation therapy dosimetry [J].
Bradley, D. A. ;
Hugtenburg, R. P. ;
Nisbet, A. ;
Rahman, Ahmad Taufek Abdul ;
Issa, Fatma ;
Noor, Noramaliza Mohd ;
Alalawi, Amani .
APPLIED RADIATION AND ISOTOPES, 2012, 71 :2-11
[7]  
Dambul K. D., 2011, IEEE 2 INT C PHOT IC
[8]   Commercial optical fibre as TLD material [J].
Espinosa, G. ;
Golzarri, J. I. ;
Bogard, J. ;
Garcia-Macedo, J. .
RADIATION PROTECTION DOSIMETRY, 2006, 119 (1-4) :197-200
[9]   Dosimetric characteristics of tissue equivalent thermoluminescent solid TL detectors based on lithium borate [J].
Furetta, C ;
Prokic, M ;
Salamon, R ;
Prokic, V ;
Kitis, G .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2001, 456 (03) :411-417
[10]  
Gedam S. C., 2013, RES J ENG SCI, V2, P28
123