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Radiochemical Reactions Between Tritium Molecule and Carbon Dioxide

W. M. Shu, S. O'hira, T. Suzuki, M. F. Nishi

Fusion Science and Technology / Volume 48 / Number 1 / July/August 2005 / Pages 684-687

Technical Paper / Tritium Science and Technology - Properties, Reactions, and Applications

To have better understanding of radiochemical reactions among oxygen baking products in a fusion reactor, reactions in equimolar tritium molecule (T2) and carbon dioxide (CO2) were examined by laser Raman spectroscopy and mass spectrometry. After mixing them at room temperature, T2 and CO2 decreased rapidly in the first 30 minutes and then the reactions between them became much slower. As the predominant products of the reactions, carbon monoxide (CO) and tritiated water (T2O) were found in gaseous phase and condensed phase, respectively. However, there likely existed also some solid products that were thermally decomposed into CO, CO2, T2, T2O, etc. during baking up to 523 K.

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