Preparation of ¹¹¹In on CS-30 Cyclotron

111In was prepared on the CS-30 cyclotron in Sichuan University via nuclear reaction  ^NatCd（p,xn）¹¹¹In with natural cadmium target by electro-deposition method. The procedures of dissolution and radiochemical separation of the irradiated cadmium target were investigated. The results indicate that the ¹¹¹In of 25.28 MBq/(μA•h) can be obtained using the proton of 26 MeV bombarded on the natural cadmium target, with radiochemical separation of Cu²⁺, Cd²⁺, Zn²⁺, and In by adopted CL-P204 resin. The radionuclide purity of ¹¹¹In produced by natural Cd is more than 99%. The total chemical impurity of Cu²⁺, Cd²⁺, and Zn²⁺ is less than 8.0 mg/L.