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The Thermoluminescence Response of Ge-Doped Flat Fibers to Gamma Radiation
Study has been undertaken of the thermoluminescence (TL) yield of various tailor-made flat cross-section 6 mol% Ge-doped silica fibers, differing only in respect of external dimensions. Key TL dosimetric characteristics have been investigated, including glow curves, dose response, sensitivity, fadin...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4570437/ https://www.ncbi.nlm.nih.gov/pubmed/26307987 http://dx.doi.org/10.3390/s150820557 |
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author | Mat Nawi, Siti Nurasiah Binti Wahib, Nor Fadira Binti Zulkepely, Nurul Najua Binti Amin, Yusoff Bin Mohd Min, Ung Ngie Bradley, David Andrew Md Nor, Roslan Bin Maah, Mohd Jamil |
author_facet | Mat Nawi, Siti Nurasiah Binti Wahib, Nor Fadira Binti Zulkepely, Nurul Najua Binti Amin, Yusoff Bin Mohd Min, Ung Ngie Bradley, David Andrew Md Nor, Roslan Bin Maah, Mohd Jamil |
author_sort | Mat Nawi, Siti Nurasiah Binti |
collection | PubMed |
description | Study has been undertaken of the thermoluminescence (TL) yield of various tailor-made flat cross-section 6 mol% Ge-doped silica fibers, differing only in respect of external dimensions. Key TL dosimetric characteristics have been investigated, including glow curves, dose response, sensitivity, fading and reproducibility. Using a (60)Co source, the samples were irradiated to doses within the range 1 to 10 Gy. Prior to irradiation, the flat fibers were sectioned into 6 mm lengths, weighed, and annealed at 400 °C for 1 h. TL readout was by means of a Harshaw Model 3500 TLD reader, with TLD-100 chips (LiF:Mg, Ti) used as a reference dosimeter to allow the relative response of the fibers to be evaluated. The fibers have been found to provide highly linear dose response and excellent reproducibility over the range of doses investigated, demonstrating high potential as TL-mode detectors in radiation medicine applications. Mass for mass, the results show the greatest TL yield to be provided by fibers of the smallest cross-section, analysis indicating this to be due to minimal light loss in transport of the TL through the bulk of the silica medium. |
format | Online Article Text |
id | pubmed-4570437 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-45704372015-09-17 The Thermoluminescence Response of Ge-Doped Flat Fibers to Gamma Radiation Mat Nawi, Siti Nurasiah Binti Wahib, Nor Fadira Binti Zulkepely, Nurul Najua Binti Amin, Yusoff Bin Mohd Min, Ung Ngie Bradley, David Andrew Md Nor, Roslan Bin Maah, Mohd Jamil Sensors (Basel) Article Study has been undertaken of the thermoluminescence (TL) yield of various tailor-made flat cross-section 6 mol% Ge-doped silica fibers, differing only in respect of external dimensions. Key TL dosimetric characteristics have been investigated, including glow curves, dose response, sensitivity, fading and reproducibility. Using a (60)Co source, the samples were irradiated to doses within the range 1 to 10 Gy. Prior to irradiation, the flat fibers were sectioned into 6 mm lengths, weighed, and annealed at 400 °C for 1 h. TL readout was by means of a Harshaw Model 3500 TLD reader, with TLD-100 chips (LiF:Mg, Ti) used as a reference dosimeter to allow the relative response of the fibers to be evaluated. The fibers have been found to provide highly linear dose response and excellent reproducibility over the range of doses investigated, demonstrating high potential as TL-mode detectors in radiation medicine applications. Mass for mass, the results show the greatest TL yield to be provided by fibers of the smallest cross-section, analysis indicating this to be due to minimal light loss in transport of the TL through the bulk of the silica medium. MDPI 2015-08-20 /pmc/articles/PMC4570437/ /pubmed/26307987 http://dx.doi.org/10.3390/s150820557 Text en © 2015 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Mat Nawi, Siti Nurasiah Binti Wahib, Nor Fadira Binti Zulkepely, Nurul Najua Binti Amin, Yusoff Bin Mohd Min, Ung Ngie Bradley, David Andrew Md Nor, Roslan Bin Maah, Mohd Jamil The Thermoluminescence Response of Ge-Doped Flat Fibers to Gamma Radiation |
title | The Thermoluminescence Response of Ge-Doped Flat Fibers to Gamma Radiation |
title_full | The Thermoluminescence Response of Ge-Doped Flat Fibers to Gamma Radiation |
title_fullStr | The Thermoluminescence Response of Ge-Doped Flat Fibers to Gamma Radiation |
title_full_unstemmed | The Thermoluminescence Response of Ge-Doped Flat Fibers to Gamma Radiation |
title_short | The Thermoluminescence Response of Ge-Doped Flat Fibers to Gamma Radiation |
title_sort | thermoluminescence response of ge-doped flat fibers to gamma radiation |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4570437/ https://www.ncbi.nlm.nih.gov/pubmed/26307987 http://dx.doi.org/10.3390/s150820557 |
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