New article: Medical Isotope Production. Conversion from HEU to LEU based production and alternative methods
Since 1992 the US restricted its high-enriched uranium (HEU) exports to encourage other countries to convert civilian facilities to low-enriched uranium (LEU), which can't be used directly to make nuclear weapons. Instead in mid 2005 Congress passed the Energy Policy Act of 2005, which includes provisions relaxing restrictions on HEU exports for medical isotope production. The primary beneficiaries of the new law are producers of medical radioisotopes.
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