Experimental Approach for Study on Mechanism of Formation and Growth of Nanometer-Sized Cesium Compounds

第一，纳米级银粒子的形成，是一种燃料产品的组成，系统地携带了一种用于光水反应器中使用的核燃料的循环过程中的燃料产品。Although the values of the volumetric average Diameter，D2 V， DMA D2， obtained by our differential mobility analyzer under low pressure conditions ranging from 123 to 300 Torr在本研究中开发，大约比那些体积average Diameter大7%those of the volumetric average Diameter，D2 V， TEM D2，从传输电子显微镜（TEM）收集到的银粒子的观测结果在DMA inlet，同时DMA和TEM尺寸的测量都在良好的协议中找到。从DMA的操作条件中计算的理论大小也是在与D2 V、TEM D2的TEM观测结果中发现的，银粒子colle的TEM观测结果也得到了良好的结果 ... More DMA在6 - 25纳米范围内进行分类后，DMA的理论尺寸集大约比D2 V的D2 V、TEM D2测量后的TEM观测结果比D2大14%。尺寸分布的几何标准偏差从TEM图像中获得，分类在从1.08到1.17的范围内找到。而且它们几乎等同于理论上的价值。（1.093）按DMA分类的颗粒，如在分类前从1.34至1.50的TEM图像中获得的尺寸分布的几何标准器件，在分类后比那些大。另外，一个用于硅碘化物颗粒的生成器，该生成器符合典型的燃料产品，命名的铯和碘，是研制的，纳米尺寸的铯碘化物粒子是由DMA制成的，其尺寸分布的尺寸从5 - 100纳米（或更大）不等，并在生成器的毛皮温度中发现了一个添加。“成形颗粒的集中是由于在炉子温度下的增加而略微增加的。”我们还演示了我们的DMA系统的大小度量和分类的nm-sized cesium iodide particles（类似于银粒子的情况）。Less（低）

First, formation of nanometer-sized silver particles, which were one of the fission products, was systematically carried out as model particles of cesium compound particles mainly included in the fission products in a recycle process for nuclear fuel used in a light-water reactor. Although the values of the volumetric average diameter, DィイD2V, DMA ィエD2, obtained by our differential mobility analyzer under low pressure conditions ranging from 123 to 300 Torr developed in this study, were approximately 7% larger than those of the volumetric average diameter, DィイD2V, TEMィエD2, obtained from the transmission electron microscope (TEM) observation results of the silver particles collected at the DMA inlet, both the DMA and TEM size measurements were found to be in good agreement. The theoretical sizes calculated from the operation conditions for the DMA were also found to be in good agreement with those of DィイD2V, TEMィエD2 obtained from the TEM observation results of the silver particles colle … More cted after the classification by the DMA in the range from 6 to 25 nm, although the theoretical sizes set by the DMA were approximately 14% larger than those of DィイD2V, TEMィエD2 measured from the TEM observation results after the classification by the DMA.Second, the geometric standard deviations of the size distributions obtained from the TEM images after classification were found to range from 1.08 to 1.17, and they were approximately equal to the theoretical value (1.093) of the particles classified by the DMA, where as the geometric standard deviations of the size distributions obtained from the TEM images before the classification ranged from 1.34 to 1.50 and were greater than those after classification.Additionally, a generator for cesium iodide particles which consisted of typical fission products, namely cesium and iodine , was developed, and nanometer- sized cesium iodide particles were formed and their size distributions were measured by the DMA The particle size ranged from 5 to 100 nm (or larger) and was found to increase with an increase in the furnace temperature at the generator. The concentration of formed particles was slightly increased with the increase in the furnace temperature. We also demonstrated the validity of our DMA system for size measurements and the classification of the nm- sized cesium iodide particles as similar to the case s of silver particles. Less