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<p>Hydrogen isotope release speciation from steel cladding into liquid lead–bismuth under oxygen-controlled conditions was experimentally quantified to clarify tritium transport behavior in lead–bismuth fast reactors. Results demonstrate that temperature, deuterium partial pressure, and oxygen concentration significantly affect the distribution of released deuterium-containing species. This work successfully quantifies the normalized fractions of different chemical forms of hydrogen isotope in the cover gas and provides a direct experimental basis for its management in lead–bismuth-cooled fast reactors.</p>

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Hydrogen isotope release speciation from cladding into liquid lead–bismuth under oxygen-controlled conditions

  • 期刊论文

  • 发表日期：

    2026年7月16日

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  • Yang Junkang,
  • Liu Xiajie,
  • Li Shiying,
  • Jiang Yingwu,
  • Wang Shengqing,
  • Wang Yuqing,
  • Ni Muyi,
  • Lin Peng

摘要

Hydrogen isotope release speciation from steel cladding into liquid lead–bismuth under oxygen-controlled conditions was experimentally quantified to clarify tritium transport behavior in lead–bismuth fast reactors. Results demonstrate that temperature, deuterium partial pressure, and oxygen concentration significantly affect the distribution of released deuterium-containing species. This work successfully quantifies the normalized fractions of different chemical forms of hydrogen isotope in the cover gas and provides a direct experimental basis for its management in lead–bismuth-cooled fast reactors.