Staff View: The thermoluminescence response of doped SiO2 optical fibres subjected to alpha particle irradiation

The thermoluminescence response of doped SiO2 optical fibres subjected to alpha particle irradiation

Ion beams are used in radiotherapy to deliver a more precise dose to the target volume while minimizing dose to the surrounding healthy tissue. For optimum dose monitoring in ion-beam therapy, it is essential to be able to measure the delivered dose with a sensitivity, spatial resolution and dynamic...

Full description

Saved in:

Bibliographic Details
Main Authors:	Ramli, Ahmad Termizi, Bradley, D. A., Hashim, Suhairul, Wagiran, Husin
Format:	Conference or Workshop Item
Published:	2007
Subjects:	QC Physics
Online Access:	http://eprints.utm.my/id/eprint/25071/
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my.utm.25071
record_format	eprints
spelling	my.utm.250712017-09-18T06:10:11Z http://eprints.utm.my/id/eprint/25071/ The thermoluminescence response of doped SiO2 optical fibres subjected to alpha particle irradiation Ramli, Ahmad Termizi Bradley, D. A. Hashim, Suhairul Wagiran, Husin QC Physics Ion beams are used in radiotherapy to deliver a more precise dose to the target volume while minimizing dose to the surrounding healthy tissue. For optimum dose monitoring in ion-beam therapy, it is essential to be able to measure the delivered dose with a sensitivity, spatial resolution and dynamic range that is sufficient to meet the demands of the various therapy situations. Optical fibres have been demonstrated by this group to show promising thermoluminescence properties with respect to photon, electron and proton irradiation. In particular, and also given the flexibility and small size of optical fibre cores, for example 125.0±0.1 μm for the Al- and Ge-doped fibres used in this study, these fibres have the potential to fulfill the above requirements. This study investigates the thermoluminescence dosimetric characteristics of variously doped SiO2 optical fibres irradiated with alpha particles from 241Am. Following subtraction of the gamma contribution from the above source, the thermoluminescence characteristics of variously doped SiO2 optical fibres have been compared with that of TLD-100 rods. The irradiations were performed in a bell jar. Of related potential significance is the effective atomic number, Zeff of the fibre, modifying measured dose from that deposited in tissues; in the present work, a scanning electron microscope and associated energy dispersive X-ray spectroscopy facility have been used to provide evaluation of Zeff. For Ge-doped fibres, the effective atomic numbers value was 11.4, the equivalent value for Al-doped fibres was 12.3. This paper further presents results on dose response and the glow curves obtained. The results obtained indicate there to be good potential for use of variously doped SiO2 optical fibres in measuring ion-beam doses in radiotherapeutic applications. 2007 Conference or Workshop Item PeerReviewed Ramli, Ahmad Termizi and Bradley, D. A. and Hashim, Suhairul and Wagiran, Husin (2007) The thermoluminescence response of doped SiO2 optical fibres subjected to alpha particle irradiation. In: na, 2007.
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	QC Physics
spellingShingle	QC Physics Ramli, Ahmad Termizi Bradley, D. A. Hashim, Suhairul Wagiran, Husin The thermoluminescence response of doped SiO2 optical fibres subjected to alpha particle irradiation
description	Ion beams are used in radiotherapy to deliver a more precise dose to the target volume while minimizing dose to the surrounding healthy tissue. For optimum dose monitoring in ion-beam therapy, it is essential to be able to measure the delivered dose with a sensitivity, spatial resolution and dynamic range that is sufficient to meet the demands of the various therapy situations. Optical fibres have been demonstrated by this group to show promising thermoluminescence properties with respect to photon, electron and proton irradiation. In particular, and also given the flexibility and small size of optical fibre cores, for example 125.0±0.1 μm for the Al- and Ge-doped fibres used in this study, these fibres have the potential to fulfill the above requirements. This study investigates the thermoluminescence dosimetric characteristics of variously doped SiO2 optical fibres irradiated with alpha particles from 241Am. Following subtraction of the gamma contribution from the above source, the thermoluminescence characteristics of variously doped SiO2 optical fibres have been compared with that of TLD-100 rods. The irradiations were performed in a bell jar. Of related potential significance is the effective atomic number, Zeff of the fibre, modifying measured dose from that deposited in tissues; in the present work, a scanning electron microscope and associated energy dispersive X-ray spectroscopy facility have been used to provide evaluation of Zeff. For Ge-doped fibres, the effective atomic numbers value was 11.4, the equivalent value for Al-doped fibres was 12.3. This paper further presents results on dose response and the glow curves obtained. The results obtained indicate there to be good potential for use of variously doped SiO2 optical fibres in measuring ion-beam doses in radiotherapeutic applications.
format	Conference or Workshop Item
author	Ramli, Ahmad Termizi Bradley, D. A. Hashim, Suhairul Wagiran, Husin
author_facet	Ramli, Ahmad Termizi Bradley, D. A. Hashim, Suhairul Wagiran, Husin
author_sort	Ramli, Ahmad Termizi
title	The thermoluminescence response of doped SiO2 optical fibres subjected to alpha particle irradiation
title_short	The thermoluminescence response of doped SiO2 optical fibres subjected to alpha particle irradiation
title_full	The thermoluminescence response of doped SiO2 optical fibres subjected to alpha particle irradiation
title_fullStr	The thermoluminescence response of doped SiO2 optical fibres subjected to alpha particle irradiation
title_full_unstemmed	The thermoluminescence response of doped SiO2 optical fibres subjected to alpha particle irradiation
title_sort	thermoluminescence response of doped sio2 optical fibres subjected to alpha particle irradiation
publishDate	2007
url	http://eprints.utm.my/id/eprint/25071/
_version_	1643647551069487104
score	13.211869

The thermoluminescence response of doped SiO2 optical fibres subjected to alpha particle irradiation

Similar Items