METHOD FOR PRODUCING TERBIUM-154 AND TERBIUM-155 RADIOISOTOPES Russian patent published in 2023 - IPC G21G1/10 

FIELD: nuclear medicine.

SUBSTANCE: invention relates to a technology for producing radionuclides for nuclear medicine using charged particle accelerators. The method for producing ¹⁵⁴Tb and ¹⁵⁵Tb radioisotopes includes irradiating a target with gadolinium isotopes at a charged particle accelerator, which is made as a cascade of two modules arranged in series in the direction of the beam of charged particles, while the first module in the direction of the beam contains the isotope ¹⁵⁶Gd, the second module contains the isotope ¹⁵⁵Gd, and when the target is irradiated with protons in the process of threshold nuclear reactions ¹⁵⁶Gd(p,3n) ¹⁵⁴Tb and ¹⁵⁵Gd(p,2n) ¹⁵⁴Tb, as well as ¹⁵⁵Gd(p,n) ¹⁵⁵Tb and ⁵⁶Gd(p,2n ) ¹⁵⁵Tb, the target radioisotopes ¹⁵⁴Tb and ¹⁵⁵Tb are simultaneously accumulated in it, which are then extracted from the target by the radiochemical method.

EFFECT: technical result is the possibility of obtaining in a cascade target with a high yield of two target radioisotopes ¹⁵⁴Tb and ¹⁵⁵Tb at once, each in both target modules with a low proportion of radionuclide impurities, with the possibility of using gadolinium isotopes with a high content in the natural mixture in the target.

4 cl, 3 dwg, 4 tbl