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.