title: Production of scandium-43 and -47 from a powdery calcium oxide target via the (nat/44)Ca(α,x)-channel.
abstract: We produced (43)Sc and (47)Sc via the (nat/44)Ca(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 (43)Sc and (47)Sc following isolation via a precipitation method with a typical 0.22µm sterile filter were 54.8MBq/µAh (1.48mCi/µAh) and 780kBq/µAh (21.1µCi/µAh) at the end of separation (approximately 1.5h from the EOB). In addition, we discuss the recycling of target Ca.
authors.affiliation: Department of Radiopharmaceuticals Development, National Institutes for Quantum and Radiological Science and Technology (NIRS-QST), Japan; Neos-Tech, Co., Ltd., Japan.
authors.forename: Katsuyuki
authors.initials: K
authors.lastname: Minegishi
authors.affiliation: Department of Radiopharmaceuticals Development, National Institutes for Quantum and Radiological Science and Technology (NIRS-QST), Japan. Electronic address: nagatsu.kotaro@qst.go.jp.
authors.forename: Kotaro
authors.initials: K
authors.lastname: Nagatsu
authors.affiliation: Department of Radiopharmaceuticals Development, National Institutes for Quantum and Radiological Science and Technology (NIRS-QST), Japan.
authors.forename: Masami
authors.initials: M
authors.lastname: Fukada
authors.affiliation: Department of Radiopharmaceuticals Development, National Institutes for Quantum and Radiological Science and Technology (NIRS-QST), Japan.
authors.forename: Hisashi
authors.initials: H
authors.lastname: Suzuki
authors.affiliation: Department of Radiopharmaceuticals Development, National Institutes for Quantum and Radiological Science and Technology (NIRS-QST), Japan.
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Ohya
authors.affiliation: Department of Radiopharmaceuticals Development, National Institutes for Quantum and Radiological Science and Technology (NIRS-QST), Japan.
authors.forename: Ming-Rong
authors.initials: MR
authors.lastname: Zhang
keywords: Ceramic target box; Sc-43; Sc-47; Sterile filter; Vertical irradiation