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Determination of 36Cl in environmental samples collected in the JCO by AMS

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Abstract

Long-lived chlorine, 36Cl (T1/2 = 301,000 y) in environmental samples has been measured by the AMS system installed in Tandem Accelerator Center, University of Tsukuba. A tri-carbon-molecular 12C3 - pilot beam method is used to stabilize the terminal voltage of the tandem. A small amount of pure carbon graphite is well mixed into a AgCl target material for creating Cl- and 12C3 - in the ion source. A 36S isobaric interference in the system is eliminated to determine 36Cl in environmental samples by chemical procedure. Some samples containing chlorine such as soil, chemical reagents and table salt have been collected in the JCO criticality accident site and analyzed to detect neutron-induced 36Cl. The experimental result has been compared with a theoretical calculation.

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Authors and Affiliations

  1. Department of Chemistry, University of Tsukuba, Tsukuba, Ibaraki, 305-8577, Japan

    R. Seki

  2. AMS Group, Tandem Accelerator Center, University of Tsukuba, Tsukuba, Ibaraki, 305-8577, Japan

    D. Arai, Y. Nagashima, T. Takahashi & T. Matsuhiro

  3. Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, Osaka, 590-0494, Japan

    T. Imanaka

Authors
  1. R. Seki
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  2. D. Arai
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  3. Y. Nagashima
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  4. T. Imanaka
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  5. T. Takahashi
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  6. T. Matsuhiro
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Seki, R., Arai, D., Nagashima, Y. et al. Determination of 36Cl in environmental samples collected in the JCO by AMS. Journal of Radioanalytical and Nuclear Chemistry 255, 245–247 (2003). https://doi.org/10.1023/A:1022567712322

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  • DOI: https://doi.org/10.1023/A:1022567712322

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