Wahib, N. and Zulkepely, N.N. and Mat Nawi, S.N. and Amin, Y.M. and Ling, Y.S. and Abdul Sani, S.F. and Maah, M.J. and Bradley, D.A. (2015) Gamma irradiated thermoluminescence response of Ge-doped SiO 2 fibre. Applied Radiation and Isotopes, 105. pp. 158-162. ISSN 0969-8043, DOI https://doi.org/10.1016/j.apradiso.2015.08.025.
Full text not available from this repository.Abstract
Over the past decade and more, considerable interest has been shown in the thermoluminescence (TL) properties of silica-based single-mode optical fibres, in particular investigating potential ionising radiation dosimetry applications. Herein, study has been made of TL glow curve, dose response, reproducibility and fading of 6. mol% Ge-doped silica, fabricated in-house and produced in the form of cylindrical fibres. Three different pairings of doped-core and silica cladding diameters were produced: (40, 241). μm, (80, 483). μm and (100, 604). μm. The TL results were compared against that of TLD-100, one of the most sensitive commercially available LiF-based TL media. For all three pairings of diameters, closely similar TL glow curve were obtained, formed of a single peaked structure with a maximum TL yield located between the temperatures 250 and 310. °C. The TL yield of the fibres were linear over the range of doses investigated, from 1. Gy up to 10. Gy, their dose response exceeding that of TLD-100, the samples also being found to be reusable, without evidence of degradation.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Higher Education (MOHE) of Malaysia: a research Grant (UM.C/HIR/MOHE/SC/33), University of Malaya: Postgraduate Research Grant, PPP (PG120-2014A) |
| Uncontrolled Keywords: | Ge-doped optical fibre; TL (thermoluminescence); Reproducibility; Fading |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 01 Oct 2018 01:55 |
| Last Modified: | 01 Oct 2018 01:55 |
| URI: | http://eprints.um.edu.my/id/eprint/19487 |
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