An investigation of the thermoluminescence of Ge-doped SiO(2) optical fibres for application in interface radiation dosimetry.
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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 | ||||||||||||||||||||||||||||||
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| Subjects : | Faculty of Engineering and Physical Sciences > Physics | ||||||||||||||||||||||||||||||
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| Date : | 25 June 2012 | ||||||||||||||||||||||||||||||
| DOI : | 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 : | 16 Jan 2019 16:36 | ||||||||||||||||||||||||||||||
| URI: | http://epubs.surrey.ac.uk/id/eprint/712661 |
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