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Different germanium dopant concentration and the thermoluminescence characteristics of flat Ge-doped optical fibres

Ahmad Fadzil, Muhammad Safwan and Ung, Ngie Min and Bradley, David Andrew and Mohd Noor, Noramaliza (2017) Different germanium dopant concentration and the thermoluminescence characteristics of flat Ge-doped optical fibres. Pertanika Journal of Science & Technology, 25 (1). pp. 327-336. ISSN 0128-7680; ESSN: 2231-8526

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Official URL: http://www.pertanika.upm.edu.my/Pertanika%20PAPERS...

Abstract

The influence of elevated germanium concentration on the thermoluminesence characteristics of a novel form of fabricated flat optical fibre was examined. All the samples were irradiated with two nominal photon energies (6 MV and 10 MV) and 1.25 MeV gamma energy. Flat fibres with 10 mol % Ge concentration provided the superior TL yield compared against that of 6 and 8 mol % Ge-doped optical fibres for both 6 MV and 10 MV energy. Interpretation of the results has been aided by study of the glow curves, revealing in particular new generation of defects in the flat fibres due to strain-generation at the collapsed surfaces. The strain represent deep-energy defects.

Item Type:Article
Keyword:Dosimetric characteristics; Flat fibre; Glow curves
Faculty or Institute:Centre For Diagnostic Nuclear Imaging
Faculty of Medicine and Health Science
Publisher:Universiti Putra Malaysia Press
ID Code:51620
Deposited By: Nabilah Mustapa
Deposited On:05 Apr 2017 13:14
Last Modified:05 Apr 2017 13:14

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