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Analysis of Soviet smoke detector plutonium » dscf0054_v1

Smoke detector source in graded Cd and Cu attenuator

The “lipstick” plutonium source from a KI-1 smoke detector is wrapped in cadmium and then stuffed in a copper pipe. These metals selectively attenuate the 59-keV Am-241 gamma energy.

Smoke detector source in graded Cd and Cu attenuator


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