title: Production of (211)At by a vertical beam irradiation method.
abstract: We produced (211)At by irradiating the semi-sealed encapsulated Bi target with an external vertical beam. At 28.5MeV, the yield of (211)At was 22MBq/μAh (600μCi/μAh). (211)At was recovered by dry distillation, and 80% of the produced (211)At was successfully obtained in dry Na(211)At form within 2h from the end of bombardment (EOB). The radionuclidic purity of (211)At was >99% at 5h from EOB.
authors.affiliation: Molecular Imaging Center, National Institute of Radiological Sciences, Japan. Electronic address: nagatsu@nirs.go.jp.
authors.forename: Kotaro
authors.initials: K
authors.lastname: Nagatsu
authors.affiliation: Molecular Imaging Center, National Institute of Radiological Sciences, Japan.
authors.forename: Katsuyuki
authors.initials: K
authors.lastname: Minegishi
authors.affiliation: Molecular Imaging Center, National Institute of Radiological Sciences, Japan.
authors.forename: Masami
authors.initials: M
authors.lastname: Fukada
authors.affiliation: Molecular Imaging Center, National Institute of Radiological Sciences, Japan.
authors.forename: Hisashi
authors.initials: H
authors.lastname: Suzuki
authors.affiliation: Molecular Imaging Center, National Institute of Radiological Sciences, Japan.
authors.forename: Sumitaka
authors.initials: S
authors.lastname: Hasegawa
authors.affiliation: Molecular Imaging Center, National Institute of Radiological Sciences, Japan.
authors.forename: Ming-Rong
authors.initials: MR
authors.lastname: Zhang
mesh_terms: D001246:Astatine / Q000737:chemistry* / Q000302:isolation & purification / Q000528:radiation effects*; D001729:Bismuth / Q000737:chemistry* / Q000528:radiation effects*; D020450:Heavy Ions; D007553:Isotope Labeling; D019275:Radiopharmaceuticals / Q000138:chemical synthesis* / Q000528:radiation effects
chemical_list: D019275:Radiopharmaceuticals; D001729:Bismuth; D001246:Astatine
keywords: (211)At production; Dry distillation; Encapsulated target; Vertical irradiation