The distributions of plutonium, americium and certain fission products between neutron-irradiated plutonium-aluminum alloy and molten bismuth have been examined in small scale experiments.nAn equal volume of bismuth extracts 78% of the plutonium, 93% of the americium, the majority of the fission product cerium but essentially no ruthenium or zirconium from the aluminum phase. The fraction of plutonium in the bismuth phase decreases slightly with increasing temperature in the range 800-1050°C but is independent of the plutonium concentration.
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