The use of fluorination as a rapid separation technique for quantification of trace-mass, short-lived isotopes is illustrated. Single crystal 238 UO 2 was exposed to a 14 MeV neutron source to produce mixed fission and activation products. Selective removal of trace volatile fluorides from non-volatile ones produced two results of interest. A decrease in background produced better detection and quantification of select analytes across the gamma spectrum. Second, at the very low burnup condition described, the volatility behaviors of common isotopes were altered relative to their well-established behaviors in higher burnup metal and metal oxide fuels.

中文翻译：

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亚皮克数量的裂变和活化产物从辐照二氧化铀基质的挥发性分离中的潜在缺陷结构影响

说明了使用氟化作为一种​​快速分离技术来量化痕量质量、短寿命同位素。单晶 238 UO 2 暴露于 14 MeV 中子源以产生混合裂变和活化产物。从非挥发性氟化物中选择性去除痕量挥发性氟化物产生了两个有趣的结果。背景的降低可以更好地检测和量化整个伽马光谱中的选定分析物。其次，在所描述的极低燃耗条件下，常见同位素的挥发性行为相对于它们在较高燃耗金属和金属氧化物燃料中的公认行为发生了改变。