Bradley, D.A. * and Lam, Siok Ee * and Siti Nuraisah, Mat Nawi * and Abdul Sani, S. F. and Khandaker, Mayeen Uddin * and Alzimami, K. and Jambi, L. and Alqahtani, A. (2022) Radiation induced defects in graphite. Applied Radiation and Isotopes, 182. ISSN 09698043
Full text not available from this repository. (Request a copy)Abstract
We provide retrospective analysis of a consolidated set of confocal Raman microspectrometry and photoluminescence data for irradiated graphitic materials, detecting the generation of low-dose defects. Within the dose range 0.1 Gy–0.2 kGy, one attracting marginal attention in previous radiation damage studies, an effect is seen that potentially seeds material weakening, the pooled data covering independent x-, gamma-rays, and thermal neutron field irradiations. Categorised in terms of a number of key influencing factors, an emergent pattern of response for the various samples under study is observed, indicative of the cycling of radiation driven energy storage and subsequent relaxation. This novel technique, to be referred to herein as defectroscopy, provides a probe of the generation of radiation-induced defects and internal annealing, the strength of the effects being strongly identified to arise from a combination of the ratio of surface area to volume of the samples, fractional carbon content, linear energy transfer, and strain-related defects within the initial material. These examinations offer a first step in considering whether the technique offers wider applicability, not least in early determination of changes in materials with widespread importance in structural and functional roles. © 2022 Elsevier Ltd
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Digital storage; Energy transfer; Gamma rays; Neutron irradiation; carbon; graphite; radiation damage |
| Subjects: | Q Science > QC Physics Q Science > QD Chemistry T Technology > TN Mining engineering. Metallurgy T Technology > TP Chemical technology |
| Divisions: | Others > Non Sunway Academics Sunway University > School of Engineering and Technology [formerly School of Science and Technology until 2020] > Research Centre for Carbon Dioxide Capture and Utilization |
| Depositing User: | Ms Yong Yee Chan |
| Related URLs: | |
| Date Deposited: | 04 Jul 2024 07:40 |
| Last Modified: | 04 Jul 2024 07:40 |
| URI: | http://eprints.sunway.edu.my/id/eprint/2639 |
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