The International journal of radiation applications and instrumentation. Part E, Nuclear geophysics · 1991 · 20 citations · 0 references
Natural SciencesEarth SciencesSoil SciencesRadiation DetectionRadiation MeasurementSoil ScienceNuclear DecayRadiation Detection PrinciplesRadiation DetectorsRadioactive DecaySoil Gas DiffusionDetectorsRadonRadon Background MeasurementRadon GasRadon MeasurementRadon MonitoringRadon TracingSoil Gas Diffusivity
Passive detection of radon isotopes depends on diffusion of radon atoms from the sites of their generation to the location of the detecting or collecting device. Because some radon decays en route to a passive detector in soil, the radon concentration measured by the detector must be less than the concentration in those soil pores where it is undiminished by diffusion to the detector cavity. The true radon concentration may be significantly underestimated in moist soils