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Updated: Mar 7, 2026

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
Published on: May 3, 2019
211Rn/211At and 209At production with intense mass separated Fr ion beams for preclinical 211At-based α-therapy
Jason R Crawford1, Peter Kunz2, Hua Yang2
1TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada; Department of Physics and Astronomy, University of Victoria, 3800 Finnerty Road, Victoria, British Columbia, V8P 5C2, Canada.
Abstract:
Mass-separated francium beams (211Fr or 213Fr) were implanted into solid targets for producing 211Rn (14.6h half-life) or 209At (5.41h), in situ. 211Rn was transferred to dodecane and isolated from contaminants, providing sources for 211At (7.21h) production by 211Rn decay (73%). 209At was recovered with high radionuclidic purity in aqueous solutions, directly. These experiments demonstrated Fr beam implantations as a novel method for producing preclinical quantities of 211Rn/211At (for therapy) and 209At (for imaging).
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