Radio and thermoluminescence performances of Dy3+-doped phospho-tellurite glass for scintillation and dosimetry materials applications

IF 3.6 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-08-29 DOI:10.1016/j.jlumin.2025.121486

P. Yasaka , W. Thanyaphirak , W. Wongwan , A. Angnanon , S. Khondara , N. Intachai , S. Kothan , H.J. Kim , J. Kaewkhao

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引用次数: 0

Abstract

This study reports the development and comprehensive luminescence characterization of Dy³⁺-doped phospho-tellurite glasses with the composition (40–x)TeO₂–30P₂O₅–20ZnO–5Sb₂O₃–5Li₂O–xDy₂O₃ (x = 0.0–1.5 mol%). The glasses were synthesized using the conventional melt-quenching technique and investigated for their potential in scintillation and dosimetry applications. Photoluminescence spectra under 350 nm excitation exhibited intense visible emissions dominated by the ⁴F_9/2 → ⁶H_13/2 electric dipole transition, with maximum intensity at 1.0 mol% Dy₂O₃. Radioluminescence measurements performed under Cu-anode X-ray excitation (50 kV, 30 mA) revealed emission centered at 574 nm, with a relative intensity of approximately 2.26 % compared to BGO scintillators. Despite this lower yield, the material provided sufficient spatial resolution for X-ray imaging, achieving a modulation transfer function (MTF) of 11.2 LP/mm and resolving multilayered structures under varying tube currents. Additionally, thermoluminescence glow curves displayed a well-defined peak at 248 °C, with an activation energy of 0.54 eV and a frequency factor of 1.30 × 10⁴ s⁻¹, confirming the presence of stable trap centers suitable for radiation dosimetry. These results highlight the multifunctional nature of Dy³⁺-doped phospho-tellurite glasses as cost-effective, transparent, and versatile materials for combined scintillation imaging and TL-based dosimetry systems.

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用于闪烁和剂量测定材料的掺Dy3+碲酸磷玻璃的放射和热释光性能

本研究报道了（40-x） teo2 - 30p2o5 - 20zno - 5sb2o3 - 5li20 - xdy2o3 （x = 0 - 1.5 mol%）掺杂Dy3+的碲酸磷玻璃的研制和综合发光特性。采用传统的熔融淬火技术合成了这些玻璃，并研究了它们在闪烁和剂量学方面的应用潜力。350 nm激发下的光致发光光谱显示出以4F9/2→6H13/2电偶极子跃迁为主的强可见发射，在1.0 mol% Dy2O3时强度最大。在cu阳极x射线激发（50 kV, 30 mA）下进行的辐射发光测量显示，发射中心为574 nm，与BGO闪烁体相比，相对强度约为2.26%。尽管产率较低，但该材料为x射线成像提供了足够的空间分辨率，实现了11.2 LP/mm的调制传递函数（MTF），并在不同的管电流下分辨多层结构。热释光曲线在248°C处有一个清晰的发光峰，活化能为0.54 eV，频率因子为1.30 × 104 s−1，证实存在适合于辐射剂量测定的稳定阱中心。这些结果突出了Dy3+掺杂磷酸碲酸盐玻璃的多功能特性，作为经济高效、透明和通用的材料，用于结合闪烁成像和基于tl的剂量测定系统。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.