FIELD: electronics.
SUBSTANCE: method includes recording number of particles emitted by radioactive layer on basis of number of voltage or current pulses recorded by counting device, then to measuring detector a flow of ionizing radiation is directed from calibrating standard electrode and also registered is number of particles, position of covered electrode is change no less than two times, by turning it in horizontal plane around its axis for arbitrary angle, while repeating measurement of pulses number, while measurement time is selected to be such that number of recorded pulses was no less than 3600 pulses for each measurement position, and then selection of necessary number of electrodes is calculated for forming electrode system in chamber.
EFFECT: higher precision, higher safety.
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