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Published on: May 3, 2019
Production of (211)At by a vertical beam irradiation method
Kotaro Nagatsu1, Katsuyuki Minegishi1, Masami Fukada1
1Molecular Imaging Center, National Institute of Radiological Sciences, Japan.
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.
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Alpha (α) decay is the emission of an α particle from the nucleus. For example, polonium-210 undergoes α decay: