radon-222


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radon-222

[′rā‚dän ‚tü′twen·tē‚tü]
(nuclear physics)
The isotope of radon having mass number 222, symbol 222Rn, which is a radioactive member of the uranium series with a half-life of 3.82 days.
References in periodicals archive ?
The emissions will include aerosol, NOx, NH3, SO2, DMS/OCS, NMVOCs, CO, CH4, N2O, CO2, certain halogen species and Radon-222.
2002, An experimental method for measuring the radon-222 emanation factor in rocks.
Radiation doses in children of the Tomsk region during inhalation of radon-222.
Radon-222 Content of Natural Gas Samples from Upper and Middle Devonian Sandstone and Shale Reservoirs in Pennsylvania: Preliminary Data.
Seasonal variation of radon-222 concentrations in specific locations in Jordan.
Crotts has compared the areas where TLPs have been most frequently sighted to regions where Apollo space missions observed evidence of a short-lived radioactive gas, radon-222, escaping from the Moon's interior - a clear sign that some type of geological activity was going on.
One isotope, radon-222, for example, decays very quickly into polonium-218 after it is released from a magma chamber--it has a half-life of 3.
Recent studies have employed radium isotopes (4) and radon-222 (5), both naturally enriched in groundwater relative to surface water due to a high uranium content in aquifer sediments, to quantify SGD in coastal systems.