Generation of Tritiated Methane Using a CuO-Al_4C_3 Bed

概要

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With the supply of a constant flow rate of hydrogen with a constant tritium concentration to a CuO–Al4C3 bed at 573 K, methane with a constant radioactivity was generated at a high conversion ratio. Although tritiated methane was conventionally generated using a set of tritiated water vapor bubbler and an Al4C3 bed, its tritium radioactivity was limited by the saturated water vapor pressure and was dropped by a large decrease in density when water was vaporized. The present CuO–Al4C3 bed can substantially eliminate its limit because of the successive conversion from hydrogen to methane using a CuO–Al4C3 bed heated to 573 K. The difference in output between the ionization chamber and the gas chromatography was discussed based on the complete-mixing series-tank model.
社団法人日本原子力学会の論文
2001-04-25