测量表面沾染的放射性,其目的是为了保持开放的放射性物质存放地方的安全标准。假如沾染表面的几何形状对测量是适宜的,即可用各种表面监测器直接进行测量。但是,当存在干扰辐射时,通常用涂样法进行间接表面监测,此法简单且灵敏度高。常用滤纸涂擦转移放射性,再用适当的计数器进行测量。在 Surveillance of radioactive contamination of surfaces is intended to maintain safety standards where open radioactive material is stored. If the surface geometry of the contaminated surface is appropriate for the measurement, it can be directly measured with various surface monitors. However, in the presence of interfering radiation, indirect surface monitoring is usually done by the smear method, which is simple and highly sensitive. Commonly used filter paper rubbed transfer radioactivity, and then use the appropriate counter measurements. in