The Measurement of Size Distribution of IndoorNatural Radioactive Aerosols by Imaging PlateTechnique

摘要

The indoor radioactive aerosols of radon decay products are considered as a mainradioactive contaminant in human environment. In this study, the particle size distribution wasmeasured with low pressure cascade impactor and imaging plate. The temporal and spatialvariations of indoor radioactive aerosols were measured at eight indoor sites of Nagoya, Japan.Effective doses were assessed using ICRP 66 and UNSCEAR 2000 approaches.