掺金钠钙硅酸盐玻璃的放射光致发光

IF 1.6 3区物理与天体物理 Q2 NUCLEAR SCIENCE & TECHNOLOGY

Radiation Measurements Pub Date : 2024-10-16 DOI:10.1016/j.radmeas.2024.107320

Hiroki Kawamoto, Yutaka Fujimoto, Keisuke Asai

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引用次数: 0

摘要

放射光致发光（RPL）是电离辐射形成的发光中心（RPL 中心）的发射现象，被应用于剂量计中。有关 RPL 材料发展的知识有限，因此需要开发新的 RPL 材料。在本研究中，我们研究了掺金钠钙硅酸盐玻璃的 RPL 特性。经 X 射线辐照后，在 330 nm 处激发时，发射带出现在 650-900 nm 处，发射强度在 3.72-100 Gy 剂量范围内线性增加。紫外-可见吸收、光致发光和电子自旋共振光谱显示，电离辐射形成了金二聚体、非桥接氧空穴中心和 E'中心（被困在玻璃宿主中的电子）。金二聚体充当了 RPL 中心。此外，金掺杂的钠钙硅酸盐玻璃在 20 分钟内完成了堆积，即在室温下逐步形成 RPL 中心，并在 330 纳米光的照射下诱导漂白。

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Radiophotoluminescence from Au-doped soda-lime silicate glass

Radiophotoluminescence (RPL) is the phenomenon of emission from luminescence centers formed by ionizing radiation (RPL centers) and is applied in dosimeters. Knowledge regarding the development of RPL materials is limited and development of new RPL materials is required. In this study, we investigate the RPL properties of Au-doped soda-lime silicate glass. After X-ray irradiation, an emission band appeared at 650–900 nm upon excitation at 330 nm, and the emission intensity increased linearly in the dose range of 3.72–100 Gy. The UV–vis absorption, photoluminescence, and electron spin resonance spectroscopy revealed that the Au dimer, non-bridged oxygen hole center, and E’ center (electrons trapped in the glass host) were formed by ionizing radiation. The Au dimer acts as the RPL center. In addition, build-up, that is, progressive formation of RPL centers at room temperature, was completed in 20 min, and bleaching by 330 nm light was induced in Au-doped soda-lime silicate glass.

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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.