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Dynamic calibration of an aerosol monitor with natural and artificial alpha-emitters

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3 Author(s)
A. Klett ; EG&G Berthold, Bad Wildbad, Germany ; W. Reuter ; L. De Mey

Measurement of airborne artificial α-activity concentrations in the presence of naturally occurring radionuclides requires reliable subtraction of the natural contribution and precise calibration. Therefore, the commercially available aerosol monitor LB150D-R was calibrated dynamically at the IPSN/CEA in Saclay, France. Aerosols with activity median aerodynamic diameters of 0.4 μm and 4 μm labelled with 239Pu were generated and isokinetically sampled by the aerosol monitor. The response to 239Pu activity concentrations and detection limits in the presence of radon progeny were determined. The retention of aerosols and their distribution on the filter was investigated using fluoresceine labelled aerosols

Published in:

IEEE Transactions on Nuclear Science  (Volume:44 ,  Issue: 3 )