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Measurement of a wide-range of X-ray doses using specialty doped silica fibres

Abdul Sani, S.F., Hammond, R, Jafari, Shakardokht, Wahab, N, Amouzad Mahdiraji, G, Siti Shafiqah, A S, Abdul Rashid, H A, Maah, M J, Aldousari, H, Alkhorayef, Mohammed , Alzimami, M and Bradley, David (2016) Measurement of a wide-range of X-ray doses using specialty doped silica fibres Radiation Physics and Chemistry, 137. pp. 49-55.

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Abstract

Using six types of tailor-made doped optical fibres, we carry out thermoluminescent (TL) studies of X-rays, investigating the TL yield for doses from 20 mGy through to 50 Gy. Dosimetric parameters were investigated for nominal 8 wt% Ge doped fibres that in two cases were co-doped, using B in one case and Br in the other. A comparative measurement of surface analysis has also been made for non-annealed and annealed capillary fibres, use being made of X-ray Photoelectron Spectroscopy (XPS) analysis. Comparison was made with the conventional TL phosphor LiF in the form of the proprietary product TLD-100, including dose response and glow curves investigated for X-rays generated at 60 kVp over a dose range from 2 cGy to 50 Gy. The energy response of the fibres was also performed for X-rays generated at peak accelerating potentials of 80 kVp, 140 kVp, 250 kVp and 6 MV photons for an absorbed dose of 2 Gy. Present results show the samples to be suitable for use as TL dosimeters, with good linearity of response and a simple glow curve (simple trap) distribution. It has been established that the TL performance of an irradiated fibre is not only influenced by radiation parameters such as energy, dose-rate and total dose but also the type of fibre.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences
Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Abdul Sani, S.F.
Hammond, R
Jafari, Shakardokhtshakardokht.jafari@surrey.ac.uk
Wahab, N
Amouzad Mahdiraji, G
Siti Shafiqah, A S
Abdul Rashid, H A
Maah, M J
Aldousari, H
Alkhorayef, Mohammedm.alkhorayef@surrey.ac.uk
Alzimami, M
Bradley, DavidD.A.Bradley@surrey.ac.uk
Date : 11 March 2016
DOI : 10.1016/j.radphyschem.2016.03.008
Copyright Disclaimer : Copyright 2016 Elsevier Ltd. All rights reserved.
Uncontrolled Keywords : Thermoluminescent; Dosimetry; Optical Fibres; X-ray photoelectron spectroscopy
Depositing User : Diane Maxfield
Date Deposited : 23 May 2018 16:00
Last Modified : 16 Jan 2019 19:10
URI: http://epubs.surrey.ac.uk/id/eprint/846490

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