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Journal Article
Research Support, Non-U.S. Gov't
Development of a nickel plated aluminum krypton-81m target system.
Applied Radiation and Isotopes 2017 March
A fully automated system was developed to produce rubidium-81 (81 Rb), based on thenat Kr (p, n)81 Rb reaction. The energy incident on the target was 26MeV. Only 6MeV was stopped inside the gas and the remainder was stopped by a specially designed flange. The target body was characterized by its conical shape and its inner walls were chemically plated with 100±10µm of nickel (Ni). Ni is advantageous as a fairly good conductor of heat whose surface can resist solutions. Additionally, the Ni plated target allowed potassium chloride to dissolve81 Rb, with no further effect on the target body. The system produced81 Rb with a production yield of approximately 4.5mCi/µAh, which is close to the calculated expected yield of 5.3mCi/µAh. The system is able to deliver reliable and reproducible radioactivity for patients and can be operated up to 1500µAh before preventive maintenance is due. Key steps in designing the81 Rb target for selected energy ranges are reported here.
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