The radon content of the atmosphere in the New York area as measured with an improved technique

Aircraft measurements of the vertical distribution of radon in the lower atmosphere

“…The characteristics of the Illinois soundings dlffer considerably from the Rn soundings taken by several other investigators. Miranda [1957] made four soundings to about 2 km where the concentration dropped off rapidly to 0.6 pc above 2.5 km. The low concentrations aloft were attributed by the authors to aged air from over the ocean, whereas the relatively high concentrations in the lower mixing level were caused by radon exhalation from the soil during the brief passage of the air mass over land.…”

“…The concept of using the natural radioactivity of the atmosphere in the study of vert,ical diffusion has been proposed by several authors including Israel [1951], Miranda [1957], and Jacobi and Andri [1963]. The radioactive material of primary interest has been radon 222 (Rn) and its daughter products.…”

Comparison of Natural Atmospheric Radioactivity Appeared over Hachijo Island and Miyake Island in the Early Spring

“…The measurements were made at every three hours and sample collection time was one hour for each cycle. In 1975, charcoal trap method (Miranda, 1957, Ishiguro, et al 1973; was adopted together with the filter pack method to simultaneously obtain the more detailed-infor. mation on radioactive substances in the atmos- phere over the Hachijo Island.…”