Abstract Aerosols were produced from a MOX (Mixed Oxide of uranium and plutonium) sample by laser heating up to 4000 K under atmospheric conditions. They were collected with a cascade impactor as function of their aerodynamic size, and studied by SEM, EDS, TEM, EELS, SAED and ICPMS. The uranium and plutonium concentrations were related to the aerosol morphology, size and formation temperature. A clear decrease of the Plutonium concentration was observed as function of the Aerodynamic Equivalent Diameter (AED). Some bigger aerosols enriched in Plutonium were found which originated from solidification of ejected droplets of the liquid phase at the surface of the sample.

中文翻译：

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通过激光加热由 (U,Pu)O2 混合氧化物产生的气溶胶中的铀-钚分配

摘要 气溶胶是由 MOX（铀和钚的混合氧化物）样品在大气条件下通过激光加热至 4000 K 产生的。根据空气动力学尺寸使用级联撞击器收集它们，并通过 SEM、EDS、TEM、EELS、SAED 和 ICPMS 进行研究。铀和钚的浓度与气溶胶形态、大小和地层温度有关。观察到作为空气动力学等效直径 (AED) 函数的钚浓度明显降低。发现了一些较大的富含钚的气溶胶，它们源于样品表面喷出的液相液滴的凝固。