Synthesis and thermoluminescence dosimetry properties of ZnGa2O4: Eu nanocrystals

IF 2.9 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

The European Physical Journal Plus Pub Date : 2025-09-22 DOI:10.1140/epjp/s13360-025-06845-5

Mansoureh Tatari, Samaneh Badreh, Maryam Erfani Haghiri

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Abstract

Thermoluminescence and dosimetry characteristics of the Europium-doped zinc gallate (ZnGa₂O₄: Eu) nanocrystals synthesized via the sol–gel method have been experimentally studied. At the glow curve of ZnGa₂O₄: Eu, the prominent TL peak is observed at 210 °C, which is helpful for dosimetry applications. Investigating the effect of the amount of Eu on the dosimetry properties shows that the TL glow peaks’ maximum intensity is obtained with a 2 mol% concentration of Eu, whose sensitivity is 2.4 times higher than undoped ZnGa₂O₄ samples. Further, with gamma irradiation in a wide range of doses from 300 to 12 kGy using a ⁶⁰Co gamma source, the linear dose response is observed up to 5 kGy in the Eu-doped zinc gallate samples. Other features, such as fading and reproducibility of the TL dose response, are also investigated. Considering the good results of this research, ZnGa₂O₄: Eu nano phosphor is suggested for high-dose gamma dosimetry applications.

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ZnGa2O4: Eu纳米晶的合成及热释光剂量学性质

实验研究了溶胶-凝胶法制备的掺铕没食子酸锌（ZnGa2O4: Eu）纳米晶体的热释光和剂量学特性。在ZnGa2O4: Eu的发光曲线上，在210°C时观察到明显的TL峰，这有助于剂量学的应用。研究了Eu用量对ZnGa2O4样品剂量学性质的影响，结果表明，当Eu浓度为2 mol%时，其发光峰强度最大，灵敏度是未掺杂ZnGa2O4样品的2.4倍。此外，使用60Co γ源在300至12 kGy的大剂量范围内照射，在eu掺杂的没食子酸锌样品中观察到高达5 kGy的线性剂量响应。其他特征，如消退和再现的TL剂量反应，也进行了研究。考虑到本研究的良好结果，ZnGa2O4: Eu纳米荧光粉被推荐用于高剂量伽马剂量测定。

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来源期刊

The European Physical Journal Plus PHYSICS, MULTIDISCIPLINARY-

CiteScore

5.40

自引率

8.80%

发文量

1150

审稿时长

4-8 weeks

期刊介绍： The aims of this peer-reviewed online journal are to distribute and archive all relevant material required to document, assess, validate and reconstruct in detail the body of knowledge in the physical and related sciences. The scope of EPJ Plus encompasses a broad landscape of fields and disciplines in the physical and related sciences - such as covered by the topical EPJ journals and with the explicit addition of geophysics, astrophysics, general relativity and cosmology, mathematical and quantum physics, classical and fluid mechanics, accelerator and medical physics, as well as physics techniques applied to any other topics, including energy, environment and cultural heritage.