Measurement of Radioisotope Yields of Iridium 189Ir, 190Ir, and 192Ir and Platinum 188Pt, 189Pt, and 191Pt when a Thick Target Made of Natural Metallic Iridium Is Irridated with 1H Nuclei

Abstract

This work is devoted to measuring the yields of iridium radioisotopes ¹⁸⁹Ir, ¹⁹⁰Ir, and ¹⁹²Ir and platinum radioisotopes ¹⁸⁸Pt, ¹⁸⁹Pt, and ¹⁹¹Pt upon irradiation of a thick target of natural metallic iridium with protons with energies of approximately 30 MeV at the U-150 cyclotron of the Kurchatov Institute. The experimental yields were compared with the corresponding calculated results obtained using data from the TENDL-2023 library. Based on the experimental results obtained in the work on the yield of the target radioisotope ¹⁸⁹Ir in the reaction ¹⁹¹Ir(p,3n)¹⁸⁹Pt(T_1/2 = 10.87 h) → ¹⁸⁹Ir and in the direct reaction ¹⁹¹Ir(p,p2n)¹⁸⁹Ir, a conclusion was made on the possibility of creating an ¹⁸⁹Ir/^189mOs isotope generator with an Auger and conversion electrons ^189mOs emitter activity at the level of 100 MBq, which will ensure its application in clinical practice.