Journal of Nuclear Materials ( IF 2.8 ) Pub Date : 2019-09-10 , DOI: 10.1016/j.jnucmat.2019.151790 A. Miskowiec , J.L. Niedziela , T.L. Spano , M.W. Ambrogio , S. Finkeldei , R. Hunt , A.E. Shields
Uranium oxides are readily amenable to investigation using Raman spectroscopy, and this technique is frequently used as a chemical analysis tool. We show, in triuranium octoxide (U3O8), the presence of previously unreported Raman peaks located below 100 cm−1. By maximum intensity, the strongest peak in U3O8 appears at 54 cm−1 and is resolution limited, making this mode an ideal candidate for chemically identifying U3O8 using Raman spectroscopy. Detailed peak analysis indicates that the main spectral feature between 300 and 500 cm−1 is more accurately described by a septet than a triplet. Two samples of differing oxygen content show only minor differences in bulk crystal structure, but subtle changes in lattice dynamics are suggestive of defect scattering in analogy to UO2+x.
中文翻译:
U 3 O 8拉曼光谱的其他复杂性
铀氧化物易于使用拉曼光谱法进行研究,并且该技术经常用作化学分析工具。我们显示,在八氧化三铀(U 3 O 8)中,存在以前未报告的位于100 cm -1以下的拉曼峰。通过最大强度,U 3 O 8中最强的峰出现在54 cm -1处,并且受分辨率限制,使该模式成为使用拉曼光谱法化学鉴定U 3 O 8的理想候选者。详细的峰分析表明,主要光谱特征在300至500 cm -1之间用八音节比三连音更准确地描述。氧含量不同的两个样品在本体晶体结构中仅显示出微小的差异,但类似于UO 2+ x,晶格动力学的细微变化表明缺陷的散射。