Abstract
In the present work, based on a combined model of photonucleon reactions, the activities of the prospective medical isotope \({}^{161}\) Tb, produced via the reactions \({}^{162}\) Dy( \(\gamma\) ,1p) and \({}^{163}\) Dy( \(\gamma\) ,1n1p) at electron beam energies ranging from the reaction thresholds up to 55 MeV, were calculated. For photonuclear production of isotopes, information on the formation of by-product nuclides is also necessary, therefore the reactions \({}^{162}\) Dy( \(\gamma\) ,1n1p) \({}^{160}\) Tb, \({}^{163}\) Dy( \(\gamma\) ,1p) \({}^{162}\) Tb and \({}^{163}\) Dy( \(\gamma\) ,2n1p) \({}^{160}\) Tb were studied. The calculation results indicate the feasibility of using a monoisotopic \({}^{162}\) Dy target for photonuclear production of \({}^{161}\) Tb at electron beam energies of 21–22 MeV, and a monoisotopic \({}^{163}\) Dy target at energies of 29–30 MeV.
