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Plasma-Wall Interaction Study towards the Steady State Operation

机译：等离子与壁相互作用对稳态运行的研究

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Various phenomena of plasma-wall interactions during long duration discharges in TRIAM-1M are investigated from macroscopic and microscopic viewpoints. It is found that the density dependence of the hydrogen neutral flux decay length is not very sensitive to the density (i.e. ne?0.2 ). Neutral transport through the scrape-off layer is important for structural formation of hydrogen recycling. The hydrogen retention in the co-deposited layer, which was obtained using a material probe during long duration discharges, is consistent with the global wall pumping rate estimated from particle balance analysis. The wall temperature and co-deposition play important roles on hydrogen re-emission and hydrogen absorption, respectively. Oxygen impurities should affect the erosion and deposition properties of the plasma-facing wall as well as the hydrogen retention property of the co-deposited layer. The co-deposition of hydrogen with molybdenum and the oxygen impurities both play important roles in the hydrogen recycling.
机译：从宏观和微观的角度研究了TRIAM-1M长时间放电过程中等离子体-壁相互作用的各种现象。发现氢中性通量衰减长度的密度依赖性对密度不是很敏感（即，n e ≤0.2）。通过刮除层的中性传输对于氢循环的结构形成很重要。在长时间放电过程中使用材料探针获得的共沉积层中的氢保留与通过颗粒平衡分析估算的整体壁抽速一致。壁温和共沉积分别对氢的再​​排放和氢的吸收起重要作用。氧杂质应影响面向等离子体的壁的腐蚀和沉积性能，以及共沉积层的氢保留性能。氢与钼的共沉积以及氧杂质均在氢循环中起重要作用。

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