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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Spectroscopic determination of heterogeneities in uranyl-doped glasses
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Spectroscopic determination of heterogeneities in uranyl-doped glasses

机译：光谱法测定铀酰掺杂玻璃中的异质性

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Fluorescence spectroscopic methods were used to obtain information concerning the speciation of uranyl doped into three types of glass: a silica sol-gel glass, a frit glass (a simulant glass for vitrification of radionuclides), and a pyrex glass. Fluorescence decay curves were acquired and lifetime distributions were calculated for each glass via a continuous model analysis program. The uranyl ion contained in the commercial borosilicate glass shows a single lifetime at approximately 370 mus, while the other glasses show multiple peaks at various lifetimes. In addition, a red shift in the emission spectrum of the uranyl ion in the frit and commercial glass indicates stronger bonding of the ion in these glasses as compared to the sol-gel glass. It is concluded that the commercial borosilicate glass provides the most homogeneous environment for the uranyl ion while phase separation in the frit is responsible for the observed multicomponent lifetime distribution. (C) 2003 Elsevier B.V. All rights reserved. [References: 17]
机译：荧光光谱法用于获得有关掺入三种玻璃中的铀酰形态的信息：硅溶胶凝胶玻璃，玻璃料玻璃（用于放射性核素玻璃化的模拟玻璃）和派热克斯玻璃。获取荧光衰减曲线，并通过连续模型分析程序计算每种玻璃的寿命分布。商用硼硅酸盐玻璃中包含的铀酰离子在约370 mus处显示单个寿命，而其他玻璃在不同寿命下显示多个峰。另外，与溶胶-凝胶玻璃相比，玻璃料和市售玻璃中的铀酰离子发射光谱的红移表明这些玻璃中离子的结合更牢固。结论是，商用硼硅酸盐玻璃为铀酰离子提供了最均匀的环境，而玻璃料中的相分离则是观察到的多组分寿命分布的原因。 （C）2003 Elsevier B.V.保留所有权利。 [参考：17]

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