THORON-SCOUT - first diffusion based active Radon and Thoron monitor

[摘要] THORON-SCOUT is a stand-alone diffusion based active Radon and Thoron monitor for long term indoor measurements to evaluate the human health risk due to activity concentration in the breathing air. Alpha-particle spectroscopy of Po isotopes, being the progeny of the decay of the radioactive noble gas Radon, is applied to separately monitor activity contributions of222Rn and220Rn (Thoron) as well. In this work we show that the portion of Thoron (Tn) may locally be remarkable and even dominating and cannot be neglected as often has been assumed up to now. Along with tobacco consumption, Rn radioactivity turned out to be a dangerous cause of lung cancer, especially in older badly vented buildings situated in regions of radioactive geological formations. THORON-SCOUT allows a precise examination of the indoor atmosphere with respect to Rn and Inactivity concentration and, therefore, a realistic evaluation of corresponding health risk.

[发布机构] SARAD GmbH, Wiesbadener Str. 10, Dresden; 01199, Germany^1

[关键词] Activity concentration;Alpha particle spectroscopies;Geological formation;Human health risks;Indoor measurement;Radioactive noble gas;Realistic evaluations;Tobacco consumption