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A method for the inhibition of carbon-film formation in hidden areas of the divertor for tritium inventory control in tokamak

E Vassallo, A Cremona, L Laguardia, G Grosso2011年Plasma Physics and Controlled FusionIF 2.2出版社

Carbon fibre composites (CFCs) planned to be used in the International Thermonuclear Experimental Reactor (ITER) divertor can be eroded due to hydrogen species from the plasma and the resulting hydrocarbons can be redeposited in other locations. Tritium retention in redeposited materials is the major concern due to the limits imposed for safety reasons by the nuclear licensing authorities. The scavenging effect has already been proposed to decrease the carbon redeposited materials using nitrogen as a scavenger. To date, only fairly limited data are available on the use of NH3 as a scavenger. In this brief communication, the possibility of performing the inhibition of carbon-film formation using NH3 was examined.

日本語訳

炭素繊維複合材料(CFC)は、国際熱核融合実験炉(ITER)のダイバータに使用される予定であり、プラズマからの水素種によって侵食される可能性があり、その結果生じる炭化水素は他の場所に再堆積する可能性がある。再堆積材料中のトリチウム保持は、原子力規制当局が安全上の理由から課す制限により、主要な懸念事項である。窒素をスカベンジャーとして使用し、炭素再堆積材料を低減するスカベンジング効果がすでに提案されている。現在までのところ、NH₃をスカベンジャーとして使用したデータはかなり限られている。本速報では、NH₃を用いた炭素膜形成の抑制の可能性を検討した。

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iter中精度(概要文一致)

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DivertorTritiumTritium inventory
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