Development of tailor-made silica fibres for TL dosimetry
The Ge dopant in commercially available silica optical fibres gives rise to appreciable thermoluminscence (TL), weight-for-weight offering sensitivity to MV X-rays several times that of the LiF dosimeter TLD100. The response of these fibres to UV radiation, X-rays, electrons, protons, neutrons and a...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/37084/ http://psasir.upm.edu.my/id/eprint/37084/1/Development%20of%20tailor-made%20silica%20fibres%20for%20TL%20dosimetry.pdf |
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| author | Bradley, David Andrew Abdul Sani, Siti Fairus Alalawi, Amani I. Jafari, Shakardokht M. Mohd Noor, Noramaliza Abdul Rashid, Hairul Azhar Mahdiraji, Ghafour Amouzad Tamchek, Nizam Ghosh, Sudipta Kumar Paul, Mukul Chandra Alzimami, Khalid S. Nisbet, Andrew Maah, Mohd Jamil |
| author_facet | Bradley, David Andrew Abdul Sani, Siti Fairus Alalawi, Amani I. Jafari, Shakardokht M. Mohd Noor, Noramaliza Abdul Rashid, Hairul Azhar Mahdiraji, Ghafour Amouzad Tamchek, Nizam Ghosh, Sudipta Kumar Paul, Mukul Chandra Alzimami, Khalid S. Nisbet, Andrew Maah, Mohd Jamil |
| author_sort | Bradley, David Andrew |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The Ge dopant in commercially available silica optical fibres gives rise to appreciable thermoluminscence (TL), weight-for-weight offering sensitivity to MV X-rays several times that of the LiF dosimeter TLD100. The response of these fibres to UV radiation, X-rays, electrons, protons, neutrons and alpha particles, with doses from a fraction of 1 Gy up to 10 kGy, have stimulated further investigation of the magnitude of the TL signal for intrinsic and doped SiO2 fibres. We represent a consortium effort between Malaysian partners and the University of Surrey, aimed at production of silica fibres with specific TL dosimetry applications, utilizing modified chemical vapour deposition (MCVD) doped silica–glass production and fibre-pulling facilities. The work is informed by defect and dopant concentration and various production dependences including pulling parameters such as temperature, speed and tension; the fibres also provide for spatial resolutions down to <10 µm, confronting many limitations faced in use of conventional (TL) dosimetry. Early results are shown for high spatial resolution (~0.1 mm) single-core Ge-doped TL sensors, suited to radiotherapy applications. Preliminary results are also shown for undoped flat optical fibres of mm dimensions and Ge-B doped flat optical fibres of sub-mm dimensions, with potential for measurement of doses in medical diagnostic applications. |
| first_indexed | 2025-11-15T09:35:41Z |
| format | Article |
| id | upm-37084 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T09:35:41Z |
| publishDate | 2014 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-370842015-12-01T06:19:36Z http://psasir.upm.edu.my/id/eprint/37084/ Development of tailor-made silica fibres for TL dosimetry Bradley, David Andrew Abdul Sani, Siti Fairus Alalawi, Amani I. Jafari, Shakardokht M. Mohd Noor, Noramaliza Abdul Rashid, Hairul Azhar Mahdiraji, Ghafour Amouzad Tamchek, Nizam Ghosh, Sudipta Kumar Paul, Mukul Chandra Alzimami, Khalid S. Nisbet, Andrew Maah, Mohd Jamil The Ge dopant in commercially available silica optical fibres gives rise to appreciable thermoluminscence (TL), weight-for-weight offering sensitivity to MV X-rays several times that of the LiF dosimeter TLD100. The response of these fibres to UV radiation, X-rays, electrons, protons, neutrons and alpha particles, with doses from a fraction of 1 Gy up to 10 kGy, have stimulated further investigation of the magnitude of the TL signal for intrinsic and doped SiO2 fibres. We represent a consortium effort between Malaysian partners and the University of Surrey, aimed at production of silica fibres with specific TL dosimetry applications, utilizing modified chemical vapour deposition (MCVD) doped silica–glass production and fibre-pulling facilities. The work is informed by defect and dopant concentration and various production dependences including pulling parameters such as temperature, speed and tension; the fibres also provide for spatial resolutions down to <10 µm, confronting many limitations faced in use of conventional (TL) dosimetry. Early results are shown for high spatial resolution (~0.1 mm) single-core Ge-doped TL sensors, suited to radiotherapy applications. Preliminary results are also shown for undoped flat optical fibres of mm dimensions and Ge-B doped flat optical fibres of sub-mm dimensions, with potential for measurement of doses in medical diagnostic applications. Elsevier 2014-11 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/37084/1/Development%20of%20tailor-made%20silica%20fibres%20for%20TL%20dosimetry.pdf Bradley, David Andrew and Abdul Sani, Siti Fairus and Alalawi, Amani I. and Jafari, Shakardokht M. and Mohd Noor, Noramaliza and Abdul Rashid, Hairul Azhar and Mahdiraji, Ghafour Amouzad and Tamchek, Nizam and Ghosh, Sudipta Kumar and Paul, Mukul Chandra and Alzimami, Khalid S. and Nisbet, Andrew and Maah, Mohd Jamil (2014) Development of tailor-made silica fibres for TL dosimetry. Radiation Physics and Chemistry, 104. pp. 3-9. ISSN 0969-806X; ESSN: 1879-0895 10.1016/j.radphyschem.2014.03.042 |
| spellingShingle | Bradley, David Andrew Abdul Sani, Siti Fairus Alalawi, Amani I. Jafari, Shakardokht M. Mohd Noor, Noramaliza Abdul Rashid, Hairul Azhar Mahdiraji, Ghafour Amouzad Tamchek, Nizam Ghosh, Sudipta Kumar Paul, Mukul Chandra Alzimami, Khalid S. Nisbet, Andrew Maah, Mohd Jamil Development of tailor-made silica fibres for TL dosimetry |
| title | Development of tailor-made silica fibres for TL dosimetry |
| title_full | Development of tailor-made silica fibres for TL dosimetry |
| title_fullStr | Development of tailor-made silica fibres for TL dosimetry |
| title_full_unstemmed | Development of tailor-made silica fibres for TL dosimetry |
| title_short | Development of tailor-made silica fibres for TL dosimetry |
| title_sort | development of tailor-made silica fibres for tl dosimetry |
| url | http://psasir.upm.edu.my/id/eprint/37084/ http://psasir.upm.edu.my/id/eprint/37084/ http://psasir.upm.edu.my/id/eprint/37084/1/Development%20of%20tailor-made%20silica%20fibres%20for%20TL%20dosimetry.pdf |