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Kinetic effects in parallel electron energy transport channels in the scrape-off layer

S Mijin, F Militello, S Newton, J Omotani, R J Kingham2020年Plasma Physics and Controlled FusionIF 2.2出版社

We present an analysis of parallel electron energy transport in the scrape-off layer (SOL), considering the convective and conductive channels, as well as the radiation and neutral inelastic energy transfer channels involving atomic deuterium. Kinetic effects in both equilibria and conductive transients are explored by utilizing the capability of the SOL-KiT code to treat electrons as either a fluid or kinetically. We find kinetic effects in multiple channels, with an emphasis on those occurring during the investigated conductive transients. Energetic electron effects in the heat flux, as well as a modification of ionization rates of up to 40% compared to Maxwellian rates during perturbations in detached conditions, are reported and discussed.

日本語訳

我々は、スクレイプオフ層(SOL)における平行電子エネルギー輸送の解析を提示し、対流および伝導のチャネルに加え、原子状重水素を含む放射および非弾性エネルギー輸送チャネルを考慮する。SOL-KiTコードが電子を流体または運動論的に扱う能力を活用することにより、平衡状態と伝導性過渡状態の両方における運動論的効果を探求する。我々は、複数のチャネルにおいて運動論的効果を見出し、特に調査した伝導性過渡状態中に生じるものに焦点を当てる。熱流束における高エネルギー電子効果、ならびに非接触状態における摂動中のマクスウェル分布と比較した最大40%の電離率の修正について報告し、考察する。

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Scrape-off layer
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