Al(PO3)3浓度对掺银磷酸盐玻璃辐射光致发光性能的影响

IF 3.6 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-09-20 DOI:10.1016/j.jlumin.2025.121562

Hiroki Kawamoto, Yutaka Fujimoto, Keisuke Asai

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引用次数: 0

摘要

辐射光致发光（RPL）是电离辐射形成的发光中心（RPL中心）所产生的一种发射现象。显示RPL的掺银磷酸盐玻璃已被用于作为“玻璃徽章”出售的个人剂量计中。以往的研究对这种玻璃的RPL性质和RPL中心形成机制进行了研究。然而，关于这种玻璃的RPL性能的许多问题仍然没有解决。在本研究中，我们测量了（1-x） NaPO3-xAl (PO3) 3-0.0009Ag2O玻璃的RPL和电子自旋共振（ESR）光谱，以阐明室温下掺银磷酸盐玻璃中Al浓度对RPL性能的影响。随着Al(PO3)3浓度的增加，RPL强度对x射线的敏感性降低，当Al含量较高（x = 0.8和1.0）时，RPL性能丧失。RPL强度敏感性的降低和RPL性能的丧失分别与ESR信号强度的降低和ESR光谱中Ag2+和Ag2+的缺失有关。此外，在未出现RPL的眼镜中也观察到Ag0的ESR信号。这一结果表明，Ag0的存在与RPL性质的表现不直接相关。

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Effect of Al(PO3)3 concentration on radiophotoluminescence properties in Ag-doped phosphate glasses

Radiophotoluminescence (RPL) is an emission phenomenon arising from luminescence centers formed by ionizing radiation (RPL centers). Ag-doped phosphate glasses that exhibit RPL have been used in the personal dosimeter sold as “glass badge.” Previous studies have investigated both the RPL properties and the mechanism of RPL center formation in this glass. However, many issues concerning the RPL properties of this glass remain unresolved. In this study, we measured RPL and electron spinresonance (ESR) spectra of (1-x)NaPO₃–xAl(PO₃)₃–0.0009Ag₂O glasses to clarify how the RPL properties at room temperature depend on Al concentration in Ag-doped phosphate glasses. The sensitivity of the RPL intensity to X-rays decreased with increasing Al(PO₃)₃ concentration, and the RPL properties were lost in glasses with higher Al contents (x = 0.8 and 1.0). The decrease in the sensitivity of the RPL intensity and the loss of the RPL properties are related to the reduction in ESR signal intensities and the absence of Ag²⁺ and Ag₂⁺ in the ESR spectra, respectively. In addition, the ESR signal of Ag⁰ was also observed in the glasses that did not exhibit RPL. This result suggests that the presence of Ag⁰ does not directly correlate with the exhibition of RPL properties.

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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.