Low-level atmospheric radioactivity measurement using a NaI(Tl) spectrometer during aerosol sampling.
In order to increase the early warning ability of the radiation monitoring network of the Czech republic, a high-volume aerosol sampler was upgraded with a NaI(Tl) probe placed directly above the aerosol filter. The paper demonstrates the possibility of using a method based on principal component regression to accurately subtract the complicated natural background caused by radon decay products. This approach yielded minimum detectable activities of 8mBq/m3, 3mBq/m3 and 7mBq/m3 for 131I, 134Cs and 137Cs, respectively, after 24h of sampling.
['Hýža|Miroslav|M|', 'Rulík|Petr|P|']
D000336:Aerosols D000396:Air Pollutants, Radioactive D000465:Algorithms D002588:Cesium Radioisotopes D018153:Czech Republic D006801:Humans D007454:Iodides D007457:Iodine Radioisotopes D025341:Principal Component Analysis D011834:Radiation Monitoring D012044:Regression Analysis D012964:Sodium D013051:Spectrometry, Gamma D013793:Thallium
Atmosphere Gamma spectrometry Radioactive aerosol Real time Spectrum analysis