Thin target excitation functions for (alpha, xn) reactions on osmium targets for platinum radiotracer production

Thin- and thick-target excitation functions of Pt-188,Pt-189,Pt-191 radionu clides were experimentally determined by cyclotron irradiation, using nucle ar reactions Os-nat(alpha ,xn) in the energy range up to 38 MeV with the Sc anditronix-MC40 cyclotron of the Joint Research Centre-Ispra (Italy) of the European Union. Radionuclidic, radiochemical and chemical purities have be en also measured by use of analytical and radioanalytical techniques. In th is paper the result of the experimental thin target excitation functions of (188),(189),Pt-191 radiotracers produced via Os-nat(alpha ,xn) reactions a re presented. Two stacks of thin osmium targets were irradiated at 38 and 2 8 MeV, respectively. Analytical fittings of the excitation functions are al so presented.