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Undeclared uranium hitches a ride on cobalt exports from Congo, study says
Philippe (left) and Manzuk quantified the amount of uranium that has been exported from the DRC in cobalt shipments or left behind in the environment. (Photo: Joel Hallberg/UW–Madison)
Researchers at the University of Wisconsin–Madison and Princeton University have published a study in Nature Communications that calls attention to a blind spot in nuclear nonproliferation: The Democratic Republic of the Congo (DRC) has exported thousands of metric tons of uranium, and there is no accounting for where it has gone.
In partnership with Lighthouse Reports and the Financial Times, UW–Madison nuclear engineering professor and nuclear security expert Sébastien Philippe and Ryan Manzuk, a geologist and research fellow in Philippe’s group and at Princeton, conducted the study using countrywide mineralization and geochemical data.
I. Kodeli, A. Milocco, A. Trkov
Nuclear Technology | Volume 168 | Number 3 | December 2009 | Pages 965-969
Miscellaneous | Special Issue on the 11th International Conference on Radiation Shielding and the 15th Topical Meeting of the Radiation Protection and Shielding Division (PART 3) / Radiation Measurements and Instrumentation | doi.org/10.13182/NT09-A9334
Articles are hosted by Taylor and Francis Online.
Several benchmark experiments performed in the past using the time-of-flight technique are stored in the SINBAD database distributed by the Nuclear Energy Agency Data Bank (e.g., OKTAVIAN, FNS, and IPPE benchmarks). These benchmarks proved to be useful for the validation of the computer codes and nuclear data evaluations, but some expertise is required from the users for the proper modeling and interpretation of the problems. The iron spheres experiment carried out in the 14-MeV facility at IPPE, Obninsk, Russia, was proposed as one of the problems in the scope of the Coordinated Network for Radiation Dosimetry (CONRAD) project sponsored by the European Commission within its 6th Framework Programme. The objective was to test the skills of the participants in the use of the computer codes and the nuclear data but also to obtain feedback information on how suitable the information contained in SINBAD is for the nowadays users and the computer codes. Outcomes of the intercomparison provide guidance for the future compilations in order to facilitate the use of the experimental data.