Adsorption and desorption of tritium on material for secondary electron multiplier.

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概要

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• As a first step toward solving the problem of contamination by tritium affecting second-ary electron multipliers, the material used in a marketed multiplier was studied in respect of adsorption and desorption behavior, with application of thermal desorption spectroscopy.<BR>It was found that the tritium adsorbed on the material was desorbed in large part in the form of tritiated water, generated by chemical reaction that combined adsorbed tritium with excess oxygen present on the material and in small part in the form of tritiated hydrocarbons produced by exchange reactions taking place between the tritium and hydrocarbons also found adsorbed on the material surface. It was further indicated that tritium desorption took place from two distinct kinds of adsorption/desorption sites. Effective removal from the material was obtained of the adsorbed tritium by heating in inert gas flow at 500°C for 6 h. If a longer heating time can be allowed, a lower heating temperature should be suffice for decontamination.

• 一般社団法人 日本原子力学会の論文

著者

• Matsuyama Masao

  Tritium Research Center Toyama University

• Watanabe Kuniaki

  Tritium Research Center, Toyama University

• Watanabe Kuniaki

  Tritium Research Center Toyama University

• Ichimura Kenji

  Tritium Research Center Toyama University

関連論文

• Compatibility of spinning rotor gauge with tritium handling systems
• Submitting to International Symposium on Fusion Nuclear Technology
• Tritium Detection Using Electret Dosimeter
• Adsorption and desorption of tritium on material for secondary electron multiplier.

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