Structural and defect changes in black carbon charcoal irradiated with gamma ray

Almugren, K.S. and Abdul Sani, S.F and Sulong, Irzwan Affendy and Mat Nawi, S.N and Siti Shafiqah, A.S and Bradley, David A. (2022) Structural and defect changes in black carbon charcoal irradiated with gamma ray. Radiation Physics and chemistry, 200. pp. 1-9. ISSN 0969-806X E-ISSN 1879-0895

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Abstract

This study investigates the use of black carbon charcoal as passive radiation dosimetry, offering low dependence on photon energy and near soft tissue effective atomic number with state-of-the-art techniques. Regression an�alyses have now been conducted using graphite manufactured commercially in the form of charcoal from three different types: mangrove, coconut, and green charcoal recycled from sawdust, working with photon-mediated interactions at radiotherapy dose levels. Explorations of changes in Raman spectroscopic characteristics, and photoluminescence dose dependence have been performed with a focus on the relationship between absorbed radiation energy and induced material changes, using a 60Co gamma-ray source doses ranging from 0 to 10 Gy. Raman spectroscopy has established to be an effective method for exploring defects in carbon-based materials due to its high sensitivity, most commonly focusing on the use of ID/IG parameter. While photoluminescence analysis will provide information on electronic properties and the band gap energy. The crystal structure of the black charcoal samples was characterised using X-ray diffractometry, with the goal of determining the degree of structural order, atomic spacing, and lattice constants of the various irradiated charcoal samples, supported by crystallite size assessments. The findings of this study could pave the way for a low-cost yet highly effective system for studying radiation-induced changes in carbon, as well as offering a viable alternative to current commercial dosimeters, well suited to applications in radiotherapy.

Item Type:	Article (Journal)
Uncontrolled Keywords:	Charcoal Gamma irradiation Raman spectroscopy Photoluminescence spectroscopy X-ray diffraction
Subjects:	Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science Kulliyyah of Science > Department of Physics
Depositing User:	DR Siti Shafiqah Binti Ahmad Shaharuddin
Date Deposited:	02 May 2023 16:40
Last Modified:	07 Jul 2025 11:38
URI:	http://irep.iium.edu.my/id/eprint/104185

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