Methods and apparatus for selective gaseous extraction of molybdenum-99 and other fission product radioisotopes
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United States of America Patent
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Jul 7, 2015
Grant Date -
Dec 15, 2011
app pub date -
Jun 8, 2011
filing date -
Jun 9, 2010
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Abstract
Methods and apparatus are provided for producing and extracting Mo-99 and other radioisotopes from fission products that overcome the drawbacks of previously-known systems, especially the excessive generation of radioactive wastes, by providing gas-phase extraction of fission product radioisotopes from a nuclear fuel target using a mixture including halide and an oxygen-containing species with heat to convert the fission product radioisotopes to gas (e.g., Mo-99 to MoO2Cl2 gas). The gaseous species are evacuated to a recovery chamber where the radioisotopes solidify for subsequent processing, while the substantially intact uranium target made available for further irradiation and extraction cycles.
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