- 研究紀要 (ISSN:09101160)
- vol.38, no.1, pp.7-9, 1999-08-30
In this paper, we describe the comparison of Rn-222 concentrations between wooden house and reinforced concrete apartment. The portable Rn-222 monitoring system, which can measure the maximum 4 sites simultaneously, was employed for this survey. The indoor Rn-222 concentration level of the wooden house was almost equivalent to that of the outdoor. In the reinforced concrete apartment, the maximum indoor Rn-222 concentration was more than 150[Bq/m^3], about 10 times higher than that of the wooden house.