揭示天然马来西亚沸石粉的剂量学潜力：一项全面的热释光研究

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2025-09-02 DOI:10.1016/j.radphyschem.2025.113280

S.N. Mat Nawi , Mayeen Uddin Khandaker , N.S. Mohd Nor Ihsan , A.I. Masdukin , Hamid Osman , D.A. Bradley , R. Ajaj , Zaenal Arifin , S.F. Abdul Sani

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引用次数: 0

摘要

沸石是一种由碱金属和碱土金属水合铝硅酸盐组成的微孔晶体材料，有天然和合成两种形式，通常以粉末状使用。研究了天然沸石粉体在0.5 ~ 150 Gy γ射线照射下的热释光特性。在升温速率为2-15°C/s时的发光曲线测量显示，升温速率为8°C/s时，能最大限度地提高发光响应。该材料具有良好的线性剂量响应，低剂量时灵敏度高，重现性好，28天后衰减约27%。有效原子序数（Zeff = 11.53）与人骨的有效原子序数（11.6-13.8）非常接近，强调了其在医疗剂量学方面的潜力。动力学参数评估进一步证实了稳定的辉光峰行为，活化能和陷阱寿命表明适度稳定的陷阱中心，从而增强了沸石TL响应的再现性和可靠性。总的来说，这些发现确立了天然沸石粉作为低成本、高效和可持续的辐射检测和医疗应用的候选材料。

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Unveiling the Dosimetric Potential of Natural Malaysian Zeolite Powder: A Comprehensive Thermoluminescent Study

Zeolite is a microporous crystalline material composed of hydrated aluminosilicates of alkali and alkaline earth metals, available in both natural and synthetic forms and commonly used in its powdered state. This study investigates the thermoluminescence (TL) properties of natural zeolite powder under gamma irradiation in the dose range of 0.5–150 Gy. TL glow curve measurements at heating rates of 2–15 °C/s revealed an optimal rate of 8 °C/s for maximizing TL response. The material exhibited a good linear dose response, high sensitivity at low doses, excellent reproducibility, and a fading of approximately 27% after 28 days. The effective atomic number (Z_eff = 11.53) closely matches that of human bone (11.6–13.8), underscoring its potential for medical dosimetry. Kinetic parameter evaluation further confirmed stable glow peak behavior, with activation energies and trap lifetimes indicating moderately stable trapping centers, thereby reinforcing the reproducibility and reliability of the zeolite TL response. Overall, these findings establish natural zeolite powder as a low-cost, efficient, and sustainable candidate for radiation detection and medical applications.

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.