Automated radon monitoring system for continuous environmental sampling

An automatic instrument for the continuous measurement of radon concentration in air has been developed. The system operates by electrostatically collecting the daughter products of 222Rn (or 220Rn) and observing the α decay events from 218Po and 214Po (or 212Bi and 212Po for 220Rn). The detector is particularly well suited for routine measurements in enclosed environments such as residences and other buildings