^(235)U气溶胶粒度分布研究

^(235)U Aerosols Particle-Size Distribution

采用固体径迹探测技术测量了235U气溶胶的粒度分布。将特定条件下产生的235U气溶胶粒子收集在金属采样板上,将固体径迹探测片覆盖在235U气溶胶样品上辐照成像,采用化学蚀刻技术使其显影成像并放大,利用光学显微镜进行有关参量测量。在特定条件下,235U气溶胶的粒度分布在1.6～8.9μm范围内。

The particle-size distribution of 235U aerosols was measured by the solid tracks detective technique. The aerosols samples were gathered onto a metal plate by the static electricity dust sampler. The radiograph of any α radioactive particles was carried out in the solid tracks detective sheet, which was imaged, developed and magnified with the chemical etched technique. The relative parameters were measured on the optical microscope. Finally, 235U aerosols particle-size distribution under specific condition is 1.6-8.9 mm.