Sani, Siti Fairus Abdul and Othman, Mohamad Habrul Ulum and Alqahtani, Amal and Nazeri, Ahmad Ali Z. Ahmad and Almugren, Khulud Saad and Ung, Ngie Min and Hashim, Siti Aiasah and Alkallas, Fatemah H. and Bradley, Dora A. (2021) Passive dosimetry of electron irradiated borosilicate glass slides. Radiation Physics and Chemistry, 178 (SI). ISSN 0969-806X, DOI https://doi.org/10.1016/j.radphyschem.2020.108903.
Full text not available from this repository.Abstract
Thermoluminescence dosimetry most typically concerns the sensing and quantification of ionizing radiation exposures, with evaluation of absorbed dose arising from electron-hole trapping in well-disposed insulating/semi-conducting media. In this passive form of dosimetry the signal derives from photons released post-irradiation heating of the dosimeter over a specific temperature range. Herein, for entrance doses from 2 Gy up to 250 kGy, investigation is made of the thermoluminescence properties of electron irradiated borosilicate glass (SiO2-B2O3), the samples deriving from commercial microscope slides (coverslips) of thickness 1.0 mm. The coverslips provide linear TL response over a wide range of radiation dose, through use of a clinical linear accelerator in a lower dose regime (2-10 Gy) and use of a product-irradiation electron linac in a higher dose regime (25 kGy-250 kGy), obtaining a regression coefficient in excess of 96%. In the high dose regime comparison has been made with the response of Ge-B doped Flat Fibre (FF) and Ge-B doped photonic crystal fibre (PCF) (collapsed). Deconvolution shows the glow curves of the borosilicate glass to be formed of five overlapping peaks, with figures of merit (FOM) of between 0.62 - 1.72 and 0.87-1.00 for the particular dose ranges 2-10 Gy and 25 kGy-250 kGy respectively. Through use of Glowfit deconvolution software, the key trapping parameters of activation energy and frequency factor were calculated for the borosilicate glass slide.
| Item Type: | Article |
|---|---|
| Funders: | University of Malaya (UM) under the RU Geran - Fakulti Program[GPF036B-2018], Deanship of Scientific Research at Princess Noura bint AbdulRahman University, Riyadh, through the Research Group Program Grant[RGP-1440-0016] |
| Uncontrolled Keywords: | Thermoluminescent (TL);Borosilicate glass slide;Electron irradiation;Glow curve |
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Science |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 09 Sep 2022 04:02 |
| Last Modified: | 09 Sep 2022 04:02 |
| URI: | http://eprints.um.edu.my/id/eprint/34268 |
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