国際連携による核融合炉実現を目指したプラズマ対向炉材料寿命評価コードの開発

機関リポジトリ オープンアクセス

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  • コクサイ レンケイ ニヨル カクユウゴウロ ジツゲン オ メザシタ プラズマ タイコウロ ザイリョウ ジュミョウ ヒョウカ コード ノ カイハツ
  • International Cooperative Code Development of Lifetime of Plasma Facing Materials for Fusion Reactor

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A 13CH4 injection experiment with a test limiter in TEXTOR is modeled by EDDY and ERO for the purpose of code-code benchmarking. The 2D patterns of CH emission of both codes agree with the experiment. The 13C deposition patterns on the limiter surface are reproduced assuming negligible effective sticking (S=0) for returning hydrocarbons. The 13C deposition efficiency decreases with increasing injection time, and it reaches a steady state value accompanied by a depth profile of 13C. The measured 13C deposition efficiency (~0.1%) is reproduced, assuming negligible sticking of returning hydrocarbons and high re-erosion yield of redeposited carbons (of the order of 10 times larger than graphite). The sticking probability and re-erosion yield are still unknown parameters, which determine erosion and deposition of plasma facing materials.

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