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- Author or Editor: Š. Šáró x
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Abstract
Methods of monitoring low plutonium concentration in the inner and outer atmosphere are analyzed and compared. It is shown that monitors based on the gross alpha counting of air filters are not sensitive enough to measure reliably plutonium activities below 1 MPC. A spectrometric discontinuously operating monitor using a gridded ionization chamber and a membrane filter having 70 cm2 active area is described. Plutonium activities of the order of 0.01 MPC /1 mBq.m–3/ can be measured by the spectrometer at 1 h sampling and 1 h counting time.
Abstract
An apparatus for natural tritium concentration measurement using an ethane-filled proportional counter with anticoincidence shielding is described. The counter characteristics and the counter calibration with internal tritium and external137Cs standards are discussed. Results of tritium analysis of Bratislava rains are presented.
