Production of scandium-43 and -47 from a powdery calcium oxide target via the nat/44Ca(α,x)-channel

We produced 43Sc and 47Sc via the nat/44Ca(α,x)-channel using a vertical beam coupled with a ceramic target box. After activation, the powdery CaO target material was dissolved in HCl in the target box in situ and remotely recovered as a radio-Sc solution. The respective yields of 43Sc and 47Sc following isolation via a precipitation method with a typical 0.22 µm sterile filter were 54.8 MBq/µA h (1.48 mCi/µA h) and 780 kBq/µA h (21.1 µCi/µA h) at the end of separation (approximately 1.5 h from the EOB). In addition, we discuss the recycling of target Ca.