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Measurements of the excitation functions of radon and astatine isotopes from 7Li-induced reactions with 209Bi for development of a 211Rn–211At generator

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Abstract

We have measured excitation functions of 209Bi(7Li, 5n)211Rn, 209Bi(7Li, 6n)210Rn, and other reactions, with the aim of realizing a 211Rn/211At generator for cancer therapy. On the basis of a comparison with theoretical predictions, we found that nuclides of 210At are produced via a break-up process rather than from the 209Bi(7Li, p5n)210At reaction. The excitation functions obtained in this study provide the most favorable conditions for 211Rn production in terms of available radioactivity and nuclide purity of the irradiated material.

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Acknowledgements

The authors thank the crew of the JAEA Tandem Accelerator for accelerator operation. We are thankful to M. Asai for his help for γ-ray spectroscopy and R. Orlandi for providing a calculation with HIVAP code.

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Authors and Affiliations

  1. Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa, 920-1192, Japan

    Eita Maeda & Takumi Taniguchi

  2. Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa, Ishikawa, 920-1192, Japan

    Akihiko Yokoyama

  3. Advanced Clinical Research Center, Fukushima Global Medical Science Center, Fukushima Medical University, Hikarigaoka 1, Fukushima, Fukushima, 960-1295, Japan

    Kohshin Washiyama

  4. Tokai Quantum Beam Science Center, Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, Shirakata 2-4, Tokai-mura, Naka-gun, Ibaraki, 319-1106, Japan

    Ichiro Nishinaka

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  1. Eita Maeda
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  2. Akihiko Yokoyama
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  3. Takumi Taniguchi
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  4. Kohshin Washiyama
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  5. Ichiro Nishinaka
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Correspondence to Akihiko Yokoyama.

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Maeda, E., Yokoyama, A., Taniguchi, T. et al. Measurements of the excitation functions of radon and astatine isotopes from 7Li-induced reactions with 209Bi for development of a 211Rn–211At generator. J Radioanal Nucl Chem 323, 921–926 (2020). https://doi.org/10.1007/s10967-019-06990-z

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  • DOI: https://doi.org/10.1007/s10967-019-06990-z

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