Orateur
Description
Various indoor air treatment methods are efficient to reduce the lung dose due to inhalation of 222Rn decay products. Ion generators are known to induce the deposition of radon charged daughters in air as a result of the electric field gradient from the generator to the room surfaces. We document the concentration of short-lived Rn daughters (alpha, beta and gamma emitters) on air filters placed on the surface of a negative ion generator located in an experimental room enriched with radon. Up to 1000-fold increase of activity from alpha emitters (214Po and 218Po) was notably observed within a few millimeters from the needles used to induce an artificial Corona discharge. This result opens perspectives for indoor radon mitigation, for designing radon detectors with higher sensitivity, particularly in the context of outdoor radon air sampling.
