METHOD FOR PRODUCING NICKEL-63 RADIONUCLIDE Russian patent published in 2021 - IPC G21G1/06 

FIELD: chemistry.

SUBSTANCE: invention relates to the field of isotope separation, in particular to a method for producing nickel-63 radionuclide, which can be used in compact beta-voltaic current sources in advanced fields of medicine, for powering remote energy consumers, in space technology, as well as in gas chromatographic analyzers and materials science. The method includes obtaining nickel from natural nickel in a gas-centrifuge cascade with a nickel-62 isotope content of at least 70% without restrictions on the content of the nickel-64 isotope, making a target from it and irradiating it with neutrons in a nuclear reactor. After separation from the irradiated target, nickel is converted to nickel tetrakis (trifluorophosphine), it is purified from phosphorus-containing impurities, and then nickel-63 is enriched. Nickel tetrakis (trifluorophosphine), obtained after the extraction of nickel-63 radionuclide, is reused by partially directing it to the production of the target and its irradiation, and the remaining part of it is sent to the enrichment of nickel-63 together with the next portion obtained from the irradiated target.

EFFECT: production by gas-centrifuge method of enriched nickel-63 radionuclide with a specific activity of up to 2.1·10¹² Bq/g (content up to 99%) and increased degree of extraction of nickel-63 from the irradiated target by 15%.

6 cl, 3 tbl, 2 ex, 1 dwg