Optical-stimulated luminescence properties of undoped and Eu-doped LiCl transparent ceramics synthesized by spark plasma sintering method

IF 1.6 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Applied Radiation and Isotopes Pub Date : 2024-09-24 DOI:10.1016/j.apradiso.2024.111528

Kensei Ichiba , Hiromi Kimura , Yuma Takebuchi , Takumi Kato , Daisuke Nakauchi , Noriaki Kawaguchi , Takayuki Yanagida

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Abstract

The undoped and Eu-doped LiCl transparent ceramics were synthesized, and their photoluminescence (PL) and optical stimulated luminescence (OSL) properties were evaluated. The PL properties of the undoped sample revealed as emission band due to a defect center. Additionally, the Eu-doped samples exhibited an emission band due to the 5d–4f transitions of Eu²⁺ ions. The OSL phenomenon was observed only in the Eu-doped samples and was not present in the undoped sample. The OSL spectra of the Eu-doped samples showed as emission band at 430 nm under stimulated at 490 nm, which was due to the 5d–4f transitions of Eu²⁺ ions. Based on the dose response functions, the lower detection limits of the Eu-doped samples were indicated as 10 mGy (0.1% Eu) and 1 mGy (0.5% and 1.0% Eu), and the 0.5% Eu-doped sample exhibited the highest OSL intensity among the Eu-doped samples.

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火花等离子烧结法合成的未掺杂和掺杂 Eu 的氯化锂透明陶瓷的光激发发光特性

合成了未掺杂和掺杂 Eu 的氯化锂透明陶瓷，并评估了它们的光致发光（PL）和光激发发光（OSL）特性。未掺杂样品的光致发光特性显示了由缺陷中心引起的发射带。此外，掺 Eu 的样品还显示出由于 Eu2+ 离子的 5d-4f 转变而产生的发射带。仅在掺 Eu 的样品中观察到 OSL 现象，未掺 Eu 的样品中没有这种现象。在 490 纳米波长的刺激下，掺 Eu 样品的 OSL 光谱在 430 纳米波长处显示出发射带，这是由于 Eu2+ 离子的 5d-4f 转变所致。根据剂量响应函数，掺 Eu 样品的检测下限分别为 10 mGy（0.1% Eu）和 1 mGy（0.5% 和 1.0% Eu），而在所有掺 Eu 样品中，0.5% Eu 样品的 OSL 强度最高。

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来源期刊

Applied Radiation and Isotopes 工程技术-核科学技术

CiteScore

3.00

自引率

12.50%

发文量

406

审稿时长

13.5 months

期刊介绍： Applied Radiation and Isotopes provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and peaceful application of nuclear, radiation and radionuclide techniques in chemistry, physics, biochemistry, biology, medicine, security, engineering and in the earth, planetary and environmental sciences, all including dosimetry. Nuclear techniques are defined in the broadest sense and both experimental and theoretical papers are welcome. They include the development and use of α- and β-particles, X-rays and γ-rays, neutrons and other nuclear particles and radiations from all sources, including radionuclides, synchrotron sources, cyclotrons and reactors and from the natural environment. 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. Papers dealing with radiation processing, i.e., where radiation is used to bring about a biological, chemical or physical change in a material, should be directed to our sister journal Radiation Physics and Chemistry.