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Study of dissolved radon and optimization of $$^{211}$$Rn/$$^{211}$$At generator

Tanaka, Ko*; Shimizu, Yusuke*; Ida, Tomonori*; Washiyama, Koshin*; Nishinaka, Ichiro*; Asai, Masato  ; Segawa, Mariko   ; Yokoyama, Akihiko*

We are developing a $$^{211}$$Rn/$$^{211}$$At generator system to produce and deliver the medical radioisotope $$^{211}$$At. This study analyzed the dissolution of Rn in solution to investigate gas-phase recovery conditions of Rn in the $$^{211}$$Rn/$$^{211}$$At generator system. The dissolution of a Bi target in a nitric-hydrochloric acid mixture and subsequent neutralization has been shown to enhance the Rn recovery efficiency. The gas-phase Rn recovery rate reached 88%, while 50% of available At has been recovered, and further improvement can be expected in the future.

Language

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English

Journal

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Radiochimica Acta

Volume

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Number

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Pages

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9 Pages

Publication Year/Month

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2026/00

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Patent information

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Paper URL

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https://doi.org/10.1515/ract-2025-0082

DOI for research data

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Link to research data related to this paper/report.

Keywords

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Astatine 211; Radon 211; Generator; Medical radioisotope

Research Facility

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タンデム加速器  

Press Release

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JAEA R&D Navigator

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Cooperating Institute

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金沢大学; 量子科学技術研究開発機構

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- Accesses

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