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Separation of terbium from proton-irradiated gadolinium oxide targets - development of an effective, scalable and
Justin M Peikin1, Vivek K Tara1, Taylor R Johnson1
1Department of Medical Physics, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53705, USA.
Abstract:
This work reports an effective and scalable radiochemical separation process for isolating terbium from Gd2O3. The separation process uses three commercially available extraction chromatography resin columns, has been implemented on a computer-controlled chemistry module, and tested with 100 mg quantities of proton-irradiated natGd2O3. The 4 h separation procedure isolated radioterbium in 1.3 mL of 0.01 M HCl with 80 ± 8 % radiochemical yield and a Gd decontamination factor >(1.2 ± 0.3)·105.
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