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Developments in production of silica-based thermoluminescence dosimeters

Bradley, David, Siti Shafiqah, A S, Siti Rozaila, Z, Sabtu, S N, Abdul Sani, S F, Alanazi, A H, Jafari, Shakardokht, Amouzad Mahdiraji, G, Mahamd Adikan, F R, Maah, M J , Nisbet, Andrew, Tamchek, N, Abdul Rashid, H A, Alkhorayef, M and Alzimami, K (2016) Developments in production of silica-based thermoluminescence dosimeters Radiation Physics and Chemistry, 137. pp. 37-44.

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Abstract

This work addresses purpose-made thermoluminescence dosimeters (TLD) based on doped silica fibres and sol–gel nanoparticles, produced via Modified Chemical Vapour Deposition (MCVD) and wet chemistry techniques respectively. These seek to improve upon the versatility offered by conventional phosphor-based TLD forms such as that of doped LiF. Fabrication and irradiation-dependent factors are seen to produce defects of differing origin, influencing the luminescence of the media. In coming to a close, we illustrate the utility of Ge-doped silica media for ionizing radiation dosimetry, first showing results from gamma-irradiated Ag-decorated nanoparticles, in the particular instance pointing to an extended dynamic range of dose. For the fibres, at radiotherapy dose levels, we show high spatial resolution (0.1 mm) depth-dose results for proton irradiations. For novel microstructured fibres (photonic crystal fibres, PCFs) we show first results from a study of undisturbed and technologically modified naturally occurring radioactivity environments, measuring doses of some 10 s of μGy over a period of several months.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences
Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Bradley, DavidD.A.Bradley@surrey.ac.uk
Siti Shafiqah, A S
Siti Rozaila, Z
Sabtu, S N
Abdul Sani, S F
Alanazi, A H
Jafari, Shakardokhtshakardokht.jafari@surrey.ac.uk
Amouzad Mahdiraji, G
Mahamd Adikan, F R
Maah, M J
Nisbet, AndrewA.Nisbet@surrey.ac.uk
Tamchek, N
Abdul Rashid, H A
Alkhorayef, M
Alzimami, K
Date : 13 January 2016
DOI : 10.1016/j.radphyschem.2016.01.013
Copyright Disclaimer : Copyright 2016 Elsevier Ltd. All rights reserved
Uncontrolled Keywords : Thermoluminescence dosimetry; Optical fibres; Defects; Proton beam; Environmental radioactivity
Depositing User : Diane Maxfield
Date Deposited : 23 May 2018 16:22
Last Modified : 16 Jan 2019 19:10
URI: http://epubs.surrey.ac.uk/id/eprint/846491

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