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Sensitive Fibre-Based Thermoluminescence Detectors for High Resolution In-Vivo Dosimetry

With interest in the potential of optical fibres as the basis of next-generation thermoluminescence dosimeters (TLDs), the development of suitable forms of material and their fabrication has become a fast-growing endeavour. Present study focuses on three types of Ge-doped optical fibres with differe...

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Autores principales: Ghomeishi, Mostafa, Mahdiraji, G. Amouzad, Adikan, F. R. Mahamd, Ung, N. M., Bradley, D. A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4551967/
https://www.ncbi.nlm.nih.gov/pubmed/26314683
http://dx.doi.org/10.1038/srep13309
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author Ghomeishi, Mostafa
Mahdiraji, G. Amouzad
Adikan, F. R. Mahamd
Ung, N. M.
Bradley, D. A.
author_facet Ghomeishi, Mostafa
Mahdiraji, G. Amouzad
Adikan, F. R. Mahamd
Ung, N. M.
Bradley, D. A.
author_sort Ghomeishi, Mostafa
collection PubMed
description With interest in the potential of optical fibres as the basis of next-generation thermoluminescence dosimeters (TLDs), the development of suitable forms of material and their fabrication has become a fast-growing endeavour. Present study focuses on three types of Ge-doped optical fibres with different structural arrangements and/or shapes, namely conventional cylindrical fibre, capillary fibre, and flat fibre, all fabricated using the same optical fibre preform. For doses from 0.5 to 8 Gy, obtained at electron and photon energies, standard thermoluminescence (TL) characteristics of the optical fibres have been the subject of detailed investigation. The results show that in collapsing the capillary fibre into a flat shape, the TL yield is increased by a factor of 5.5, the yield being also some 3.2 times greater than that of the conventional cylindrical fibre fabricated from the same perform. This suggests a means of production of suitably sensitive TLD for in-vivo dosimeter applications. Addressing the associated defects generating luminescence from each of the optical fibres, the study encompasses analysis of the TL glow curves, with computerized glow curve deconvolution (CGCD) and 2(nd) order kinetics.
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spelling pubmed-45519672015-09-04 Sensitive Fibre-Based Thermoluminescence Detectors for High Resolution In-Vivo Dosimetry Ghomeishi, Mostafa Mahdiraji, G. Amouzad Adikan, F. R. Mahamd Ung, N. M. Bradley, D. A. Sci Rep Article With interest in the potential of optical fibres as the basis of next-generation thermoluminescence dosimeters (TLDs), the development of suitable forms of material and their fabrication has become a fast-growing endeavour. Present study focuses on three types of Ge-doped optical fibres with different structural arrangements and/or shapes, namely conventional cylindrical fibre, capillary fibre, and flat fibre, all fabricated using the same optical fibre preform. For doses from 0.5 to 8 Gy, obtained at electron and photon energies, standard thermoluminescence (TL) characteristics of the optical fibres have been the subject of detailed investigation. The results show that in collapsing the capillary fibre into a flat shape, the TL yield is increased by a factor of 5.5, the yield being also some 3.2 times greater than that of the conventional cylindrical fibre fabricated from the same perform. This suggests a means of production of suitably sensitive TLD for in-vivo dosimeter applications. Addressing the associated defects generating luminescence from each of the optical fibres, the study encompasses analysis of the TL glow curves, with computerized glow curve deconvolution (CGCD) and 2(nd) order kinetics. Nature Publishing Group 2015-08-28 /pmc/articles/PMC4551967/ /pubmed/26314683 http://dx.doi.org/10.1038/srep13309 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Ghomeishi, Mostafa
Mahdiraji, G. Amouzad
Adikan, F. R. Mahamd
Ung, N. M.
Bradley, D. A.
Sensitive Fibre-Based Thermoluminescence Detectors for High Resolution In-Vivo Dosimetry
title Sensitive Fibre-Based Thermoluminescence Detectors for High Resolution In-Vivo Dosimetry
title_full Sensitive Fibre-Based Thermoluminescence Detectors for High Resolution In-Vivo Dosimetry
title_fullStr Sensitive Fibre-Based Thermoluminescence Detectors for High Resolution In-Vivo Dosimetry
title_full_unstemmed Sensitive Fibre-Based Thermoluminescence Detectors for High Resolution In-Vivo Dosimetry
title_short Sensitive Fibre-Based Thermoluminescence Detectors for High Resolution In-Vivo Dosimetry
title_sort sensitive fibre-based thermoluminescence detectors for high resolution in-vivo dosimetry
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4551967/
https://www.ncbi.nlm.nih.gov/pubmed/26314683
http://dx.doi.org/10.1038/srep13309
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