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An investigation of the thermoluminescence of Ge-doped SiO(2) optical fibres for application in interface radiation dosimetry.

Abdul Rahman, AT, Hugtenburg, RP, Abdul Sani, SF, Alalawi, AI, Issa, F, Thomas, R, Barry, MA, Nisbet, Andrew and Bradley, David (2012) An investigation of the thermoluminescence of Ge-doped SiO(2) optical fibres for application in interface radiation dosimetry. Applied Radiation and Isotopes, 70 (7). pp. 1436-1441.

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Abstract

We investigate the ability of high spatial resolution (∼120μm) Ge-doped SiO(2) TL dosimeters to measure photoelectron dose enhancement resulting from the use of a moderate to high-Z target (an iodinated contrast media) irradiated by 90kVp X-rays. We imagine its application in a novel radiation synovectomy technique, modelled by a phantom containing a reservoir of I(2) molecules at the interface of which the doped silica dosimeters are located. Measurements outside of the iodine photoelectron range are provided for using a stepped-design that allows insertion of the fibres within the phantom. Monte Carlo simulation (MCNPX) is used for verification. At the phantom medium I(2)-interface additional photoelectron generation is observed, ∼60% above that in the absence of the I(2), simulations providing agreement to within 3%. Percentage depth doses measured away from the iodine contrast medium reservoir are bounded by published PDDs at 80kVp and 100kVp.

Item Type: Article
Subjects : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Abdul Rahman, ATUNSPECIFIEDUNSPECIFIED
Hugtenburg, RPUNSPECIFIEDUNSPECIFIED
Abdul Sani, SFUNSPECIFIEDUNSPECIFIED
Alalawi, AIUNSPECIFIEDUNSPECIFIED
Issa, FUNSPECIFIEDUNSPECIFIED
Thomas, RUNSPECIFIEDUNSPECIFIED
Barry, MAUNSPECIFIEDUNSPECIFIED
Nisbet, AndrewA.Nisbet@surrey.ac.ukUNSPECIFIED
Bradley, DavidD.A.Bradley@surrey.ac.ukUNSPECIFIED
Date : 25 June 2012
Identification Number : 10.1016/j.apradiso.2011.11.030
Copyright Disclaimer : © 2012. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Depositing User : Symplectic Elements
Date Deposited : 04 Apr 2017 09:21
Last Modified : 31 Oct 2017 14:40
URI: http://epubs.surrey.ac.uk/id/eprint/712661

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