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The separation of milligram amounts of {248}Cm from {252}Cf is presented. Essentially isotopically pure {248}Cm was obtained from an old {252}Cf neutron source by acid leaching. Curium was separated from californium in a cation exchange column combining two different effluents: alpha-HMBA at pH 4.0 for Cf, and alpha-HIBA at pH 4.8 for Cm. The method was first tested using Sm and Gd as actinide analogues. Excellent separation was obtained, yielding 12.6 mg Cm (11.9 mg {248}Cm) free from Cf ({250}Cf less than 1.3E-2 ng).

Additional information

Authors: MALMBECK R ET AL, JRC, Institute for Transuranium Elements, Karlsruhe (DE);SCHADEL M, Gesellschaft für Schwerionenforschung, Darmstadt (DE);TRAUTMANN N, Johannes Gutenberg-Universität Mainz, Institut für Kernchemie, Mainz (DE)
Bibliographic Reference: An article published in: Radiochimica Acta, Vol.89 (2001), pp.543-549
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