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Physics of the edge plasma and first wall in fusion devices: synergistic effects

S I Krasheninnikov, A Yu Pigarov, Wonjae Lee2015年Plasma Physics and Controlled FusionIF 2.2出版社

Various synergistic effects resulting from plasma–wall interactions in magnetic fusion devices are considered. The crucial role of the first wall out-gassing processes in the recovery of pedestal density in the high-confinement mode of tokamak operation after giant type-I edge localized modes (ELMs) transient events as well as in the setting the ELM period is discussed. The shielding effects of vapor plasma formed during interactions of extremely large plasma heat fluxes with material surfaces are analyzed. The strongly non-linear impact of secondary electron emission from the divertor target on the incident plasma heat flux is discussed.

日本語訳

磁場閉じ込め核融合装置におけるプラズマ–壁相互作用から生じる様々な相乗効果について考察する。トカマク運転の高閉じ込めモードにおいて、巨大なI型エッジ局在モード(ELM)の過渡事象後のペデスタル密度の回復における第一壁の脱ガス過程の決定的な役割と、ELM周期の設定におけるその役割について議論する。極めて大きなプラズマ熱流束と材料表面との相互作用中に形成される蒸気プラズマの遮蔽効果を解析する。ダイバータターゲットからの二次電子放出が入射プラズマ熱流束に及ぼす強く非線形な影響について議論する。

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