Bradley, D.A. and Mandiraji, G.A. and Ghomeishi, M. and Dermosesian, E. and Adikan, Faisal Rafiq Mahamd and Rashid, H.A.A. and Maah, M.J. (2015) Enhancing the radiation dose detection sensitivity of optical fibres. Applied Radiation and Isotopes, 100. pp. 43-49. ISSN 0969-8043, DOI https://doi.org/10.1016/j.apradiso.2014.12.005.
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Abstract
A method for improving the thermoluminescence (TL) yield of silica-based optical fibres is demonstrated. Using silica obtained from a single manufacturer, three forms of pure (undoped) fibre (capillary-, flat-, and photonic crystal fibre (PCF)) and two forms of Ge-doped fibre (capillary- and flat-fibre) were fabricated. The pure fibre samples were exposed to 6 and 21 MeV electrons, the doped fibres to 6 MV photons. The consistent observation of large TL yield enhancement is strongly suggestive of surface-strain defects generation. For 6 MeV irradiations of flat-fibre and PCF, respective TL yields per unit mass of about 12.0 and 17.5 times that of the undoped capillary-fibre have been observed. Similarly, by making a Ge-doped capillary-fibre into flat-fibre, the TL response is found to increase by some 6.0 times. Thus, in addition to TL from the presence of a dopant, the increase in fused surface areas of flat-fibres and PCF is seen to be a further important source of TL The glow-curves of the undoped fibres have been analysed by computational deconvolution. Trap centre energies have been estimated and compared for the various fibre samples. Two trap centre types observed in capillary-fibre are also observed in flat-fibte and PCF. An additional trap centre in flat-fibre and one further trap centre in PCF are observed when compared to capillary fibre. These elevated-energy trap centres are linked with strain-generated defects in the collapsed regions of the flat fibre and PCF. (C) 2014 Elsevier Ltd. All rights reserved.
| Item Type: | Article |
|---|---|
| Funders: | UM-MOHE High Impact Research Grant |
| Additional Information: | ISI Document Delivery No.: CJ4ZT Times Cited: 0 Cited Reference Count: 27 Cited References: Alajerami YSM, 2013, J PHYS CHEM SOLIDS, V74, P1816, DOI 10.1016/j.jpcs.2013.07.013 Alawiah A., 2013, P SPIE INT SOC OPTIC Bradley DA, 2014, RADIAT PHYS CHEM, V104, P3, DOI 10.1016/j.radphyschem.2014.03.042 DeWerd LA, 2014, RADIAT MEAS, V71, P276, DOI 10.1016/j.radmeas.2014.05.005 Espinosa G, 2006, RADIAT PROT DOSIM, V119, P197, DOI 10.1093/rpd/nci564 Fernandez AF, 2008, FUSION ENG DES, V83, P50, DOI 10.1016/j.fusengdes.2007.05.034 FRIEBELE EJ, 1976, APPL PHYS LETT, V28, P516, DOI 10.1063/1.88839 Furetta C, 2010, HDB THERMOLUMINESCEN, Vsecond Girard S, 2013, IEEE T NUCL SCI, V60, P4305, DOI 10.1109/TNS.2013.2281832 Haghiri ME, 2013, J LUMIN, V141, P177, DOI 10.1016/j.jlumin.2013.03.039 Haghiri ME, 2013, RADIAT PHYS CHEM, V90, P1, DOI 10.1016/j.radphyschem.2013.05.009 Halperin F, 2014, RADIAT PHYS CHEM, V105, P89, DOI 10.1016/j.radphyschem.2014.05.014 HANAFUSA H, 1987, J NON-CRYST SOLIDS, V95-6, P655, DOI 10.1016/S0022-3093(87)80665-8 HIBINO Y, 1986, J APPL PHYS, V60, P1797, DOI 10.1063/1.337785 Horowitz Y. S., 1995, RADIAT PROT DOSIM, V60, P3 Jafari SM, 2014, RADIAT PHYS CHEM, V97, P95, DOI 10.1016/j.radphyschem.2013.11.007 Lee JW, 1998, J NON-CRYST SOLIDS, V239, P57, DOI 10.1016/S0022-3093(98)00754-6 Marcazzo J, 2013, J LUMIN, V140, P82, DOI 10.1016/j.jlumin.2013.03.009 O'Keeffe S, 2007, MEAS SCI TECHNOL, V18, P3171, DOI 10.1088/0957-0233/18/10/S19 Page BR, 2014, INT J RADIAT ONCOL, V89, P476, DOI 10.1016/j.ijrobp.2013.12.022 Pugliesi F, 2014, APPL RADIAT ISOTOPES, V89, P1, DOI 10.1016/j.apradiso.2014.01.009 Sahare PD, 2014, J RADIOANAL NUCL CH, V302, P517, DOI 10.1007/s10967-014-3273-0 Salah N, 2011, RADIAT PHYS CHEM, V80, P923, DOI 10.1016/j.radphyschem.2011.03.023 Sani SFA, 2014, RADIAT PHYS CHEM, V104, P134, DOI 10.1016/j.radphyschem.2014.03.043 Timar-Gabor A, 2011, APPL RADIAT ISOTOPES, V69, P780, DOI 10.1016/j.apradiso.2011.01.015 Twardak A, 2014, RADIAT PHYS CHEM, V104, P76, DOI 10.1016/j.radphyschem.2014.05.046 Yusoff AL, 2005, RADIAT PHYS CHEM, V74, P459, DOI 10.1016/j.radphyschem.2005.08.009 Bradley, D. A. Mandiraji, G. Amouzad Ghomeishi, M. Dermosesian, E. Adikan, F. R. M. Rashid, H. A. A. Maah, M. J. MAAH, MOHD/B-5230-2010; Engineering, Faculty /I-7935-2015 MAAH, MOHD/0000-0002-0381-8954; Engineering, Faculty /0000-0002-4848-7052 UM-MOHE High Impact Research Grant A000007-50001, UM.C/625/1/HIR/33 The authors would like to acknowledge the University of Malaya fibre fabrication group, Desmond M. Chow for fabricating the PCF, UM-MOHE High Impact Research Grant numbers A000007-50001 and UM.C/625/1/HIR/33 in financially supporting this project, and TM R&D for providing the Ge-doped preform. 0 PERGAMON-ELSEVIER SCIENCE LTD OXFORD APPL RADIAT ISOTOPES |
| Uncontrolled Keywords: | Thermoluminescence, Ionizing radiation, Dosimeter, Optical fibre, Flat, fibre, Photonic crystal fibre, Trap energy, Glow curve analysis, FORMATION MECHANISM, INDUCED DEFECTS, THERMOLUMINESCENCE, DOSIMETRY, |
| Subjects: | T Technology > T Technology (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Engineering |
| Depositing User: | Mr Jenal S |
| Date Deposited: | 03 Mar 2016 01:06 |
| Last Modified: | 11 Oct 2018 01:57 |
| URI: | http://eprints.um.edu.my/id/eprint/15655 |
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