[Sublimatographic separation of fission products by beta-diketones complexes (author's transl)].

The sublimatographic separation of volatile beta-diketone, pivoloyltrifluoroacetone (PTA), chelates of fission products was studied. When Zr carrier was added, the sublimated radioactive chelates deposited on only one zone at the position of 45-60 cm (85-50 degrees C) from the position of the sample. The position agreed with the deposited position of inactive chelates of Zr. The nuclide presented in the zone was almost 95Zr. On the other hand, when Y or Eu carrier was added, the sublimated radioactive chelates deposited on two zones at the position of 20-40 cm(150-120 degrees C) and 60-75 cm (50-25 degrees C), respectively. The zone at higher temperature side agreed with the deposited position of inactive chelates of each carrier and the nuclei presented in this zone were mainly lanthanide elements (141Ce, 144Ce, 147Nd, 140La. 103Ru, 95Zr). The zone at lower temperature side was mainly carrier-free state of 95Zr, but the position of carrier-free 95Zr shifted to lower temperature side than the deposited position of inactive chelates of Zr carrier.