Laser Induced Breakdown Spectroscopy (LIBS) has the potential to allow direct, standoff measurement of contaminants on nuclear plant. Here, LIBS is evaluated as an analytical tool for measurement of Sr and Cs contamination on type 304 stainless steel surfaces. Samples were reacted in model acidic (PUREX reprocessing) and alkaline (spent fuel ponds) Sr and Cs bearing liquors, with LIBS multi-pulse ablation also explored to measure contaminant penetration. The Sr II (407.77 nm) and Cs I (894.35 nm) emission lines could be separated from the bulk emission spectra, though only Sr could be reliably detected at surface loadings > 0.5 mg cm⁻². Depth profiling showed decay of the Sr signal with time, but importantly, elemental analysis indicated that material expelled from LIBS craters is redistributed and may interfere in later laser shot analyses.

激光诱导击穿光谱法（LIBS）可以直接，间接地测量核电站中的污染物。在这里，LIBS被评估为用于测量304型不锈钢表面上Sr和Cs污染的分析工具。样品在模型酸性（PUREX后处理）和碱性（废燃料池）含Sr和Cs的液体中反应，还探索了LIBS多脉冲烧蚀来测量污染物的渗透。Sr II（407.77 nm）和Cs I（894.35 nm）发射谱线可以从整体发射光谱中分离出来，尽管在表面载荷> 0.5 mg cm ^-2时只能可靠地检测到Sr。。深度分析显示Sr信号随时间衰减，但重要的是，元素分析表明，从LIBS陨石坑排出的物质已重新分布，并可能干扰以后的激光发射分析。