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Radon detector

Radon analytical facilities

Measurements of the naturally-occurring radioactive gas radon can be used to accurately categorise the degree of atmospheric mixing.

The Radon Analytical Laboratory operates a comprehensive suite of instrumentation for the monitoring and analysis of natural radioactivity resulting from radon (222Rn), thoron (220Rn) and their progeny. The facility’s capabilities include measuring an extended range of radon and radon progeny concentrations in indoor or outdoor air; in situ radon and thoron emanation from rocks and soils; and radon exhalation rates from gaseous, liquid, solid and mixed phase samples.

Radon analytical and monitoring facilities include radon concentration measurements using the “Radon Rig”. Built at ANSTO, the radon rig is designed to measure very low radon concentrations in, and radon exhalation from, either solid, liquid or gaseous samples under normal pressures.

Dual flow loop, two-filter radon detector

Two models (700 L and 1500 L) of semi-portable detectors are available for outdoor, continuous, hourly monitoring of ambient radon in air. These detectors, which can be manoeuvred by 2-4 persons (<3m long; <100kg), can be deployed to most field sites for either short-term (several weeks), or semi-permanent, monitoring.