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Some problems on the measurement of 222Rn concentrations by passive cup method
1Department of Nuclear Engineering, School of Engineering, Nagoya University, Japan.
Health Physics
|October 1, 1995
Abstract:
A passive cup monitor has been constructed by using a 50 mm radius stainless steel hemisphere. The conductive housing has reduced the scatter in track densities. In dwellings with high 220Rn concentrations, it is particularly necessary to measure 222Rn concentration with a monitor having a radon exchange rate less than 0.1 h-1.