Effect of photon irradiation on the thermoluminescence response of optical fibres

Studies on silica glass (SiO2) optical fibre as thermoluminescent materials for medical radiation dosimetry have been conducted by several research groups. This study focuses on the thermoluminescence (TL) response, linearity, sensitivity, dose response, fading, reproducibility and minimum detectabl...

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Main Author:	Mohamad Sharif, Nurul Ain
Format:	Thesis
Language:	English
Published:	2013
Subjects:	QC Physics
Online Access:	http://eprints.utm.my/id/eprint/47937/25/NurulAinMohamadMFS2013.pdf
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spelling	my-utm-ep.479372017-06-20T08:38:52Z Effect of photon irradiation on the thermoluminescence response of optical fibres 2013-12 Mohamad Sharif, Nurul Ain QC Physics Studies on silica glass (SiO2) optical fibre as thermoluminescent materials for medical radiation dosimetry have been conducted by several research groups. This study focuses on the thermoluminescence (TL) response, linearity, sensitivity, dose response, fading, reproducibility and minimum detectable dose of 12 optical fibres sample namely Ge (A) Batch 1, 2 and 3, Ge (B), Multi Photonic Crystal Fibre (MPCF, 220 µm), Multi Photonic Crystal Fibre (MPCF, 2 mm), photonic crystal fibres (PCF), Dummy Flat Fibre (DFF), Flat fiber, Photosensitive Flat Fibre (PFF), Erbium (Er) and Aluminium/ Thulium (Al + Tm) doped optical fibre. A comparison was performed with TLD-100 (chips) to obtain the best TL response among the samples. Irradiation were performed with 6 and 10 MV photons covering the dose range of 1 Gy to 4 Gy by using linear accelerator machine Elekta SynergyTM at Pantai Hospital, Kuala Lumpur and Varian Model 2100C linear accelerator at University Malaya Medical Centre (UMMC). The comparisons of TL response with different model linear accelerators involved in this research were also performed. The results show that the highest sensitivity was obtained by using TLD-100, followed by PFF, Flat, Ge (A) Batch 1, MPCF (2 mm), Ge (A) Batch 3, Ge (A) Batch 2, DFF, Al+Tm, Ge (B), Er, MPCF (220 µm) and PCF. The fading of 5 optical fibres Ge (A) Batch 1, PFF, Er, Flat Fibre and PCF were determined and the loss of the TL signal for these TL materials were 10%, 29%, 30%, 30% and 43%, respectively. The dopant concentrations of Ge (A) Batch 1, Ge (B) and Er were found to be in the range of 0.03-0.72 mol % while the Zeff was in the range of 11.9-17.1. These TL materials have great potential to be introduced as new radiation dosimeters. 2013-12 Thesis http://eprints.utm.my/id/eprint/47937/ http://eprints.utm.my/id/eprint/47937/25/NurulAinMohamadMFS2013.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QC Physics
spellingShingle	QC Physics Mohamad Sharif, Nurul Ain Effect of photon irradiation on the thermoluminescence response of optical fibres
description	Studies on silica glass (SiO2) optical fibre as thermoluminescent materials for medical radiation dosimetry have been conducted by several research groups. This study focuses on the thermoluminescence (TL) response, linearity, sensitivity, dose response, fading, reproducibility and minimum detectable dose of 12 optical fibres sample namely Ge (A) Batch 1, 2 and 3, Ge (B), Multi Photonic Crystal Fibre (MPCF, 220 µm), Multi Photonic Crystal Fibre (MPCF, 2 mm), photonic crystal fibres (PCF), Dummy Flat Fibre (DFF), Flat fiber, Photosensitive Flat Fibre (PFF), Erbium (Er) and Aluminium/ Thulium (Al + Tm) doped optical fibre. A comparison was performed with TLD-100 (chips) to obtain the best TL response among the samples. Irradiation were performed with 6 and 10 MV photons covering the dose range of 1 Gy to 4 Gy by using linear accelerator machine Elekta SynergyTM at Pantai Hospital, Kuala Lumpur and Varian Model 2100C linear accelerator at University Malaya Medical Centre (UMMC). The comparisons of TL response with different model linear accelerators involved in this research were also performed. The results show that the highest sensitivity was obtained by using TLD-100, followed by PFF, Flat, Ge (A) Batch 1, MPCF (2 mm), Ge (A) Batch 3, Ge (A) Batch 2, DFF, Al+Tm, Ge (B), Er, MPCF (220 µm) and PCF. The fading of 5 optical fibres Ge (A) Batch 1, PFF, Er, Flat Fibre and PCF were determined and the loss of the TL signal for these TL materials were 10%, 29%, 30%, 30% and 43%, respectively. The dopant concentrations of Ge (A) Batch 1, Ge (B) and Er were found to be in the range of 0.03-0.72 mol % while the Zeff was in the range of 11.9-17.1. These TL materials have great potential to be introduced as new radiation dosimeters.
format	Thesis
qualification_level	Master's degree
author	Mohamad Sharif, Nurul Ain
author_facet	Mohamad Sharif, Nurul Ain
author_sort	Mohamad Sharif, Nurul Ain
title	Effect of photon irradiation on the thermoluminescence response of optical fibres
title_short	Effect of photon irradiation on the thermoluminescence response of optical fibres
title_full	Effect of photon irradiation on the thermoluminescence response of optical fibres
title_fullStr	Effect of photon irradiation on the thermoluminescence response of optical fibres
title_full_unstemmed	Effect of photon irradiation on the thermoluminescence response of optical fibres
title_sort	effect of photon irradiation on the thermoluminescence response of optical fibres
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2013
url	http://eprints.utm.my/id/eprint/47937/25/NurulAinMohamadMFS2013.pdf
_version_	1747817267940294656

Effect of photon irradiation on the thermoluminescence response of optical fibres

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