FIELD: nuclear instrumentation engineering; search for and enrichment of minerals; medicine, flaw inspection, and other fields where ionizing radiation is to be recorded.
SUBSTANCE: proposed ionizing radiation recorder has detector unit, pulse amplifier, shaping stage, measuring unit, threshold stage, and actuating mechanism; additionally installed between shaping stage and measuring unit is time-interval-to-amplitude conversion stage that has time interval length counting circuit, differentiating circuit, pulse normalizer characterized in regulated adjustment threshold, delay circuit, and anticoincidence circuit , both inserted in mentioned stage circuit so that voltage pulses picked off output of time interval length counting circuit arrive at input of pulse normalizer characterized in regulated adjustment threshold and at that of delay circuit simultaneously and from their output they go to anticoincidence circuit input.
EFFECT: reduced background radiation, and its space component in particular, thereby reducing sensitivity threshold.
1 cl, 2 dwg
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