@article{oai:nagoya.repo.nii.ac.jp:00030623,
 author = {Ikebe, Yukimasa and Iida, Takao and Shimo, Michikuni and Sakashita, Tetsuya},
 issue = {1},
 journal = {Memoirs of the School of Engineering, Nagoya University},
 month = {Oct},
 note = {Research works on the atmosphere radon and its' daughters have been carried out. The correlations among the concentrations of unattached [218]Po and [218]Po ions, the number and size of condensation nuclei, and the effective attachment coefficients were clarified. The variations of radon and thoron concentrations were analyzed in relation to the wind speed and turbulent diffusivity.Outdoor and indoor [222]Rn concentrations in Japan and China have been surveyed using passive electrostatic integrating [222]Rn monitors. The annual mean outdoor [222]Rn concentrations ranged from 2.4 to 9.7 Bq m[-3] and 4.8 to 14.6 Bq m[-3] in Japan and China, respectively. The ratios of indoor and outdoor [222]Rn concentrations were about 2 to 3. Outdoor [222]Rn concentrations were measured continuously with ectrostatic radon monitors at six locations in Japan and China. The [222]Rn concentrations at Nagoya, Kasugai, Toki, Beijing and Fuzhou showed a diurnal variation clearly in autumn. At Kanazawa, the clear diurnal variation appeared in summer. An analytical model of one layer long range transport of "background component" of [222]Rn was proposed using air mass trajectory technique. This model could explain the temporal variation of background component of [222]Rn. In addition, a three-dimensional numerical simulation model was developed for calculating the temporal variation of [222]Rn. The variation of observed [222]Rn concentration agreed with that of calculated one.},
 pages = {1--47},
 title = {On the Properties and Behavior of Radon and its Daughters in the Atmosphere},
 volume = {49},
 year = {1997}
}