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Science 1 June 2001:
Vol. 292. no. 5522, p. 1634
DOI: 10.1126/science.292.5522.1634
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News Focus

NUCLEAR PROLIFERATION:
Tracing the Shadowy Origins of Nuclear Contraband

Susan Ladika

KARLSRUHE, GERMANY--The Institute for Transuranium Elements (ITU) in this city near the French border has earned a reputation over the past decade as the go-to lab for probing the shadowy origins of seized nuclear materials. Unmasking a substance is the easy part; tracing it back to the source is far more difficult. A team of ITU scientists uses cutting-edge techniques to examine how enrichment, irradiation at nuclear power plants, and radioactive decay alter the isotopic composition of nuclear materials.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)