Study on the effects of preparation processes on OSL and TL properties of NaMgF3:Dy,Eu

IF 1.6 3区物理与天体物理 Q2 NUCLEAR SCIENCE & TECHNOLOGY Radiation Measurements Pub Date : 2024-09-10 DOI:10.1016/j.radmeas.2024.107297

Siyuan Zhang, Kaiyong Tang, Li Fu, Mo Zhou, Haijun Fan, Yan Zeng, Zhiyuan Li

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Abstract

OSL fading with storage time after irradiation remains a major obstacle in the development of ideal OSL materials. Dy and Eu co-doped NaMgF₃ are attractive candidates for various rare earth doped matrix materials. In this study, NaMgF₃:Dy,Eu was synthesized by a solid-state reaction, and the effects of heating temperature, duration, atmosphere, and cooling rate on XRD, TL and OSL properties were studied. A simple, safe, efficient, and time-saving solid-state reaction was identified as a potential method for the preparation of NaMgF₃:Dy,Eu, which could be optimally prepared by heating at 750 °C for 2 h under nitrogen atmosphere (2 l/min) followed by rapid cooling. The results show that NaMgF₃:Dy,Eu has a more stable OSL response and an excellent TL glow curve, with only a 0.4% decrease in the OSL signal read after 1 d of dose irradiation compared to that immediately after irradiation, and a high main TL peak at ∼320 °C. It has been indicated the OSL signal in this material seems to be strongly related to the main TL peak. The material has a considerable OSL sensitivity and decay rate than the Luxel Detector. NaMgF₃:Dy,Eu will have a promising future in the field of OSL dosimetry due to its near tissue equivalence, low OSL fading without preheating, fast OSL decay rate, and predictable and easily reusable dose elimination.

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制备工艺对 NaMgF3:Dy,Eu 的光致发光（OSL）和热致发光（TL）特性的影响研究

辐照后，OSL 会随储存时间而衰减，这仍然是开发理想 OSL 材料的主要障碍。Dy和Eu共掺杂的NaMgF3是各种稀土掺杂基体材料的理想候选材料。本研究通过固态反应合成了 NaMgF3:Dy,Eu，并研究了加热温度、持续时间、气氛和冷却速率对 XRD、TL 和 OSL 性能的影响。结果表明，在氮气环境（2 升/分钟）下于 750 ℃加热 2 小时，然后快速冷却，可以制备出最佳的 NaMgF3：Dy,Eu。结果表明，NaMgF3:Dy,Eu 具有更稳定的 OSL 响应和出色的 TL 辉光曲线，在剂量辐照 1 d 后读取的 OSL 信号与辐照后立即读取的信号相比仅下降了 0.4%，并且在 ∼320 °C 处具有较高的 TL 主峰。这表明该材料中的 OSL 信号似乎与主 TL 峰密切相关。与 Luxel 探测器相比，该材料具有相当高的 OSL 灵敏度和衰减率。NaMgF3:Dy,Eu因其接近组织等效性、无需预热的低OSL衰减、快速的OSL衰减率以及可预测和易于重复使用的剂量消除，在OSL剂量测定领域前景广阔。

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来源期刊

Radiation Measurements 工程技术-核科学技术

CiteScore

4.10

自引率

20.00%

发文量

116

审稿时长

48 days

期刊介绍： The journal seeks to publish papers that present advances in the following areas: spontaneous and stimulated luminescence (including scintillating materials, thermoluminescence, and optically stimulated luminescence); electron spin resonance of natural and synthetic materials; the physics, design and performance of radiation measurements (including computational modelling such as electronic transport simulations); the novel basic aspects of radiation measurement in medical physics. Studies of energy-transfer phenomena, track physics and microdosimetry are also of interest to the journal. Applications relevant to the journal, particularly where they present novel detection techniques, novel analytical approaches or novel materials, include: personal dosimetry (including dosimetric quantities, active/electronic and passive monitoring techniques for photon, neutron and charged-particle exposures); environmental dosimetry (including methodological advances and predictive models related to radon, but generally excluding local survey results of radon where the main aim is to establish the radiation risk to populations); cosmic and high-energy radiation measurements (including dosimetry, space radiation effects, and single event upsets); dosimetry-based archaeological and Quaternary dating; dosimetry-based approaches to thermochronometry; accident and retrospective dosimetry (including activation detectors), and dosimetry and measurements related to medical applications.