Measurement of Cross Sections of Reactions ¹⁹¹Ir(p,pxn)189,190Ir,¹⁹³Ir(p,pn)¹⁹²Ir, and ¹⁹¹Ir(p,xn)188,189Pt and Cumulative Cross Sections of Reactions ¹⁹¹Ir(p,n)¹⁹¹Pt+¹⁹³Ir(p,3n)¹⁹¹Pt during Irradiation of Natural Iridium Target with ¹H Nuclei

This article addresses measurement of the cross sections of the reactions ¹⁹¹ Ir( $$p,pn$$ ) ¹⁹⁰ Ir, ¹⁹³ Ir( $$p,pn$$ ) ¹⁹² Ir, ¹⁹¹ Ir( $$p,4n$$ ) ¹⁸⁸ Pt, ¹⁹¹ Ir( $$p,3n$$ ) ¹⁸⁹ Pt, and ¹⁹¹ Ir( $$p,p2n$$ ) ¹⁸⁹ Ir and the cumulative cross section of the reaction ¹⁹³ Ir( $$p,3n$$ ) ¹⁹¹Pt+¹⁹¹ Ir( $$p,n$$ ) ¹⁹¹ Pt in the proton energy range of 29.6–17.2 MeV during proton irradiation of a target of natural metal iridium on the U-150 cyclotron of the National Research Center (NRC) Kurchatov Institute. The experimental cross sections of the reactions were compared with data of TENDL-2023. The results of this study make it possible to evaluate the effectiveness of the production of the target radioisotope ¹⁸⁹ Ir, a precursor in a ¹⁸⁹Ir/¹⁸⁹ᵐ Os isotope generator of an Auger emitter and conversion electrons from ¹⁸⁹ᵐ Os, which can be used as a low-dose therapeutic agent in nuclear medicine. Experimental cross sections of the formation of accompanying radionuclide impurities enable development of an optimal radiochemical technique for release of the radioisotope ¹⁸⁹ Ir from a proton-irradiated iridium target.