DEVICE FOR REMOTE DETECTION OF ALPHA-RADIATION SOURCES Russian patent published in 2000 - IPC

FIELD: remote location of polluting fragments of fissionable fuel. SUBSTANCE: detector designed for remote detection of fissionable fuel such as plutonium polluting surfaces in case of accidents or in the course of production processes has calibrating and air-ion metering detectors, as well as calibrating alpha-source; calibrating detector is connected to calibrating pulse counter whose output is connected to first input of comparator; second input of the latter is connected to predetermined-number bus and its output, to control input of operating-voltage source whose output is connected to calibrating detector. EFFECT: improved selectivity of alpha-radiation recording at high background due to other accompanying rays. 2 dwg