Abstract
Formation of Yb and Tm radioisotopes upon irradiation of ytterbium of natural isotopic composition by bremsstrahlung photons with energies up to 55 MeV was studied. The yield of the medical radionuclide 167Tm was (7.8 ± 1.1) × 103 Bq × μA-1 × h−1 × cm2 × g−1. Thulium radioisotopes were separated from irradiated ytterbium target by extraction chromatography on the LN Resin sorbent in nitric media. Efficient separation of tracer amounts of thulium from tens of milligrams of ytterbium could be achieved. The method can be of practical importance for the production of 167Tm when using a 168Yb enriched target.
Published Version
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