November 09, 2013
Details of the SILEX are classified under the provisions of the US Atomic Energy Act. So while we don't have the whole story on the details of the process, it's reasonable to assume that only about three stages of enrichment are needed to produce five percent enriched uranium from ore, and only about seven stages to produce fully weapons-grade enriched uranium. Estimates suggest that a laser-based uranium enrichment plant would have an initial cost, size, and power requirement about one-fifth that of an equivalent centrifuge-based enrichment plant. The operating cost would also be expected to be far smaller.
Simpler, smaller, and less costly are characteristics that give laser enrichment of isotopes major potential to reduce the cost of nuclear power. However, these same characteristics also make such processes pose a substantial danger for widespread proliferation.
8 page description of the SILEX process
71 page updated license application
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