Photon energy response of silicon dioxide fibre optic and TLD 100 using Monte Carlo simulation

Even though there are other methods in detecting and measuring radiation, thermoluminescence (TL) is still the main choice in many areas of ionizing radiation dosimetry. This fact leads to the countless investigation of other materials to be used as TL phosphor. Recent material being recognised and...

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Main Author:	Asni, Hazila
Format:	Thesis
Language:	English
Published:	2011
Subjects:	QC Physics
Online Access:	http://eprints.utm.my/id/eprint/26923/1/HazilaAsniMFS2011.pdf
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id	my-utm-ep.26923
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spelling	my-utm-ep.269232018-05-27T06:36:36Z Photon energy response of silicon dioxide fibre optic and TLD 100 using Monte Carlo simulation 2011-02 Asni, Hazila QC Physics Even though there are other methods in detecting and measuring radiation, thermoluminescence (TL) is still the main choice in many areas of ionizing radiation dosimetry. This fact leads to the countless investigation of other materials to be used as TL phosphor. Recent material being recognised and investigated as a TL phosphor is silicon dioxide fibre optic. This study focuses on the energy response of silicon dioxide fibre optics and TLD 100 subjected to photon irradiation. The TL responses for photon energies, ranging from 20 keV to 20 MeV, were investigated as energy absorbed in the TL materials. The simulation was performed using Monte Carlo NParticle transport code version 5 (MCNP5). The input parameters included in this study are geometry specification, source information, material information and tallies. Tally F6 was used to obtain average fraction of energy deposited by TL materials in the simulation. Comparisons of energy responses were made between calculated, simulation and previous experiment. For TLD 100, calculation results show an over responses at below 100 keV while the simulation and experiment results shows over response at below 150 keV. In terms of energy dependence, TLD 100 has a relatively flat response since its response lies within ANSI acceptable range. Unlike TLD 100, fibre optic had a limited range of flat response. A flat response can only be seen at energy range of 200 keV to 10 MeV. Although simulation results exhibit similar pattern of energy responses, the values are slightly higher when compared to calculated and experiment results, especially at lower energy (< 100 keV). The effect of different dopant concentrations on the energy responses were also analysed and discussed. Result from simulation shows no apparent effect of different dopant concentration on the energy response. 2011-02 Thesis http://eprints.utm.my/id/eprint/26923/ http://eprints.utm.my/id/eprint/26923/1/HazilaAsniMFS2011.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 Asni, Hazila Photon energy response of silicon dioxide fibre optic and TLD 100 using Monte Carlo simulation
description	Even though there are other methods in detecting and measuring radiation, thermoluminescence (TL) is still the main choice in many areas of ionizing radiation dosimetry. This fact leads to the countless investigation of other materials to be used as TL phosphor. Recent material being recognised and investigated as a TL phosphor is silicon dioxide fibre optic. This study focuses on the energy response of silicon dioxide fibre optics and TLD 100 subjected to photon irradiation. The TL responses for photon energies, ranging from 20 keV to 20 MeV, were investigated as energy absorbed in the TL materials. The simulation was performed using Monte Carlo NParticle transport code version 5 (MCNP5). The input parameters included in this study are geometry specification, source information, material information and tallies. Tally F6 was used to obtain average fraction of energy deposited by TL materials in the simulation. Comparisons of energy responses were made between calculated, simulation and previous experiment. For TLD 100, calculation results show an over responses at below 100 keV while the simulation and experiment results shows over response at below 150 keV. In terms of energy dependence, TLD 100 has a relatively flat response since its response lies within ANSI acceptable range. Unlike TLD 100, fibre optic had a limited range of flat response. A flat response can only be seen at energy range of 200 keV to 10 MeV. Although simulation results exhibit similar pattern of energy responses, the values are slightly higher when compared to calculated and experiment results, especially at lower energy (< 100 keV). The effect of different dopant concentrations on the energy responses were also analysed and discussed. Result from simulation shows no apparent effect of different dopant concentration on the energy response.
format	Thesis
qualification_level	Master's degree
author	Asni, Hazila
author_facet	Asni, Hazila
author_sort	Asni, Hazila
title	Photon energy response of silicon dioxide fibre optic and TLD 100 using Monte Carlo simulation
title_short	Photon energy response of silicon dioxide fibre optic and TLD 100 using Monte Carlo simulation
title_full	Photon energy response of silicon dioxide fibre optic and TLD 100 using Monte Carlo simulation
title_fullStr	Photon energy response of silicon dioxide fibre optic and TLD 100 using Monte Carlo simulation
title_full_unstemmed	Photon energy response of silicon dioxide fibre optic and TLD 100 using Monte Carlo simulation
title_sort	photon energy response of silicon dioxide fibre optic and tld 100 using monte carlo simulation
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2011
url	http://eprints.utm.my/id/eprint/26923/1/HazilaAsniMFS2011.pdf
_version_	1747815543947132928

Photon energy response of silicon dioxide fibre optic and TLD 100 using Monte Carlo simulation

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