Simultaneous microbeam IBA and beam-induced luminescence analysis of strained doped silica fibre radiation dosimeters

Grime, Geoffrey W. and Sani, Siti Fairus Abdul and Palitsin, Vladimir and Shafiqah, A.S. Siti and Maah, Mohd Jamil and Alyahyawi, Amjad and Bradley, David Andrew (2019) Simultaneous microbeam IBA and beam-induced luminescence analysis of strained doped silica fibre radiation dosimeters. Radiation Physics and Chemistry, 155. pp. 173-177. ISSN 0969-806X

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Official URL: https://doi.org/10.1016/j.radphyschem.2018.05.023

Abstract

We demonstrate that the simultaneous combination of ion beam analysis (IBA) and ion beam induced luminescence (IL) can reveal valuable information concerning the performance of strained doped silica fibre thermoluminescence microdosimeters. The micron scale spatial resolution and low detection limits of IBA allow the lateral distribution of dopant elements to be mapped and then correlated with the distribution of prompt radioluminescence. Measurement of the decay of the IL signal with dose provide information concerning the saturation of the subsequent TL signal at high doses. MeV ion beams can deposit relatively high energy in localized, well-quantified small volumes and so this method is valuable for studying high dose effects in TL dosimeters. We describe a simple modification of the target chamber microscope which enables sensitive low background light detection in two wavelength bands and present preliminary results from three types of germanium doped silica fibre dosimeter.

Item Type: Article
Uncontrolled Keywords: Microbeam; Beam-induced luminescence; Doped-silica fibre; Thermoluminescence dosimeter
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Q Science > QD Chemistry
Divisions: Faculty of Science > Dept of Chemistry
Faculty of Science > Dept of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 22 Jan 2019 02:41
Last Modified: 22 Jan 2019 02:41
URI: http://eprints.um.edu.my/id/eprint/20081

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