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Impact of sheath evolution on ion impinging energy on the target during edge localized modes

Shuyu Dai, Dezhen Wang2018年被引用 14Nuclear FusionIF 3出版社

The impact of the sheath evolution during edge localized modes (ELMs) on the ion impinging energy on the divertor target is studied by particle-in-cell simulation. A significant increase of the ion impact energy is obtained at the beginning of ELM. The arrival of the upstream bulk plasma leads to a suppression of the potential drop in front of the divertor target. The peak value of the ion impact energy emerges after the maximum potential drop in front of the divertor target. It is found that the peak value of the ion impact energy is increased by about 30% compared to the ion initial energy, which is induced by the potential drop during ELMs.

日本語訳

周辺局在モード(ELM)中のシース発展がダイバータターゲットへのイオン入射エネルギーに及ぼす影響を、粒子インセルシミュレーションにより研究した。ELMの開始時にイオン入射エネルギーの顕著な増加が得られた。上流バルクプラズマの到着は、ダイバータターゲット前方の電位降下の抑制をもたらす。イオン入射エネルギーのピーク値は、ダイバータターゲット前方の最大電位降下の後に現れる。イオン入射エネルギーのピーク値は、ELM中の電位降下によって誘起され、イオン初期エネルギーと比較して約30%増加することが見出された。

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Edge localized modePlasma sheath
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