Abstract
The preparation of metallic 210Pb targets by vacuum evaporation condensation is described. Lead-210, which is highly radioactive, is available as nitrate in 3M HNO 3. Solid Pb(NO 3) 2 is extracted from this solution and subjected to a reductive evaporation procedure. A special-shaped evaporation crucible yields a collection efficiency of 2.8 mg/cm 2 per milligram of employed material.
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