Abstract
A dosimetric system for determining the rate at which gas-aerosol radioactive impurities are discharged during a radiological emergency is examined. It is shown that the optimal system for evaluating the rate of discharge is one that consists of flow-through and closed (hermetic) ionization chambers. The addition of a xenon spectrometer to the system makes it possible to determine the partial rate of emission of individual radionuclides and the total emission rate of all nuclides. The optimal parameters of the ionization chambers making it possible to record the emission rate of a radioactive impurity with air flow rate to 12 m/sec against background dose rate up to 200 Sv/h are found.
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