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RM-2 radon detector

rm2 radon detector


RM-2 radon detector


Dr. Quentin Crowley


Museum Building, TCD


  • portable instrument for in-situ measurement of soil gas radon concentration
  • the RM-2 Radon detector is designed for in situ rapid and accurate analysis of radon (222Rn) in soil gas
  • it is well applicable to radon risk mapping and assessment of radon content in foundation soils
  • its unique characteristics it can be used as well for various geophysical applications such as uranium exploration, assessment of radon at uranium mines and uranium tailings, geochemical mapping


Uranium and thorium generate by their decay radioactive gases radon (222Rn, T½ = 3.82 days) and thoron (220Rn, T½ = 54.5 seconds), both sources of alpha radiation, which differ by their half-lives T½.

Additional information:

Radon detector RM-2 consists of a set of fifteen ionization chambers IK-250, the reader ERM-3 and a soil-gas sampling set. Samples of soil-gas are collected through hollow steel rods by means of a plastic large-volume syringe and transferred to evacuated ionization chambers.

Rm2 radon detector