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


Citation

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

Abstract / Synopsis

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.


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Additional Metadata

Item Type: Article
Divisions: Centre For Diagnostic Nuclear Imaging
Faculty of Medicine and Health Science
Publisher: Universiti Putra Malaysia Press
Keywords: Dosimetric characteristics; Flat fibre; Glow curves
Depositing User: Nabilah Mustapa
Date Deposited: 05 Apr 2017 05:14
Last Modified: 05 Apr 2017 05:14
URI: http://psasir.upm.edu.my/id/eprint/51620
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