Rao Rekha, Bhagat R K, Salke Nilesh P, Kumar Arun
Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai-400 085, India.
Appl Spectrosc. 2014;68(1):44-8. doi: 10.1366/13-07172.
Raman spectroscopic investigations were carried out on proposed nuclear fuel thorium dioxide-uranium dioxide (ThO2-UO2) solid solutions and simulated fuels based on ThO2-UO2. Raman spectra of ThO2-UO2 solid solutions exhibited two-mode behavior in the entire composition range. Variations in mode frequencies and relative intensities of Raman modes enabled estimation of composition, defects, and oxygen stoichiometry in these compounds that are essential for their application. The present study shows that Raman spectroscopy is a simple, promising analytical tool for nondestructive characterization of this important class of nuclear fuel materials.
对拟议的核燃料二氧化钍 - 二氧化铀(ThO₂ - UO₂)固溶体以及基于ThO₂ - UO₂的模拟燃料进行了拉曼光谱研究。ThO₂ - UO₂固溶体的拉曼光谱在整个成分范围内呈现出双模行为。拉曼模式的频率变化和相对强度变化使得能够估算这些化合物中的成分、缺陷和氧化学计量,而这些对于它们的应用至关重要。本研究表明,拉曼光谱是一种用于无损表征这类重要核燃料材料的简单且有前景的分析工具。