Abstract
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( \(p,3n\) ) \({}^{191}\textrm{Pt}+{}^{191}\) 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 \({}^{189}\textrm{Ir}/{}^{189m}\) 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.
