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首页> 外文期刊>Journal of Hazardous Materials >Radiological dispersal device outdoor simulation test: Cesium chloride particle characteristics
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Radiological dispersal device outdoor simulation test: Cesium chloride particle characteristics

机译:放射线分散装置室外模拟试验:氯化铯颗粒特性

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Particles were generated from the detonation of simulated radiological dispersal devices (RDDs) using non-radioactive CsCl powder and explosive C4. The physical and chemical properties of the resulting particles were characterized. Two RDD simulation tests were conducted at Lawrence Livermore National Laboratory: one of the simulated RDDs was positioned 1 m above a steel plate and the other was partially buried in soil. Particles were collected with filters at a distance of 150 m from the origin of the RDD device, and particle mass concentrations were monitored to identify the particle plume intensity using real time particle samplers. Particles collected on filters were analyzed via computer-controlled scanning electron microscopy coupled with energy dispersive X-ray spectrometry (CCSEM/EDX) to determine their size distribution, morphology, and chemical constituents. This analysis showed that particles generated by the detonation of explosives can be associated with other materials (e.g., soil) that are in close proximity to the RDD device and that the morphology and chemical makeup of the particles change depending on the interactions of the RDD device with the surrounding materials.
机译:使用非放射性CsCl粉末和爆炸性C4,由模拟放射扩散装置(RDD)爆炸产生粒子。表征了所得颗粒的物理和化学性质。在劳伦斯·利弗莫尔国家实验室进行了两次RDD模拟测试:其中一个模拟的RDD位于钢板上方1 m,另一个则部分埋在土壤中。在距RDD设备起点150 m处用过滤器收集颗粒,并使用实时颗粒采样器监测颗粒质量浓度以识别颗粒羽流强度。通过计算机控制的扫描电子显微镜结合能量色散X射线光谱法(CCSEM / EDX)对收集在过滤器上的颗粒进行分析,以确定其尺寸分布,形态和化学成分。该分析表明,由爆炸物爆炸产生的颗粒可能与紧邻RDD设备的其他材料(例如土壤)相关联,并且颗粒的形态和化学组成随RDD设备的相互作用而变化。与周围的材料。

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