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Radiochemistry of an equimolar deuterium–tritium mixture or of T2 with CO

R.D Penzhorn, U Berndt, C Caldwell-Nichols, S Grünhagen, J Wendel2000年Fusion Engineering and DesignIF 1.7出版社

AbstractThe kinetics of the radiation-induced reactions of carbon monoxide with either an equimolar mixture of deuterium and tritium or pure tritium was investigated at several total pressures and within a range of concentrations that simulate those expected in the fuel cycle of a fusion machine, i.e. 1–6% CO in DT or T2 containing 0–8% He. The reaction rate was found to be directly proportional to the initial tritium concentration in the gas mixture. From the initial rate of CO pressure decrease, an average CO consumption yield per ion pair of 1.6±0.8 was calculated from a total of 24 experiments. At a constant composition of CO, DT and He, the rate of CO consumption decreased strongly with decreasing total pressure. The main gaseous products found were per-tritiated methane, per-tritiated higher hydrocarbons, and carbon dioxide. Water and possibly formaldehyde were identified as minor products. Heated palladium/silver from permeators such as used in fusion machine fuel clean-up considerably enhance the radiation-induced reaction rate between tritium and carbon monoxide.

日本語訳

一酸化炭素と重水素・トリチウム等モル混合物または純トリチウムとの放射線誘起反応の速度論を、数種の全圧および核融合装置の燃料サイクルで予想される濃度範囲(DTまたはT2中に1〜6%のCO、0〜8%のHeを含む)で調査した。反応速度は、ガス混合物中の初期トリチウム濃度に正比例することが見出された。CO圧力減少の初期速度から、全24回の実験において、イオン対あたりの平均CO消費収率は1.6±0.8と算出された。CO、DT、Heの組成が一定の場合、CO消費速度は全圧の低下に伴い大幅に減少した。検出された主なガス状生成物は、完全トリチウム化メタン、完全トリチウム化高級炭化水素、および二酸化炭素であった。水およびおそらくホルムアルデヒドが副生成物として同定された。核融合装置の燃料浄化で使用されるような透過器からの加熱パラジウム/銀は、トリチウムと一酸化炭素間の放射線誘起反応速度をかなり促進することが判明した。

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TritiumDeuteriumDeuterium-tritium
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