ヘリウムプラズマ熱流におけるタングステンに対するエネルギー伝達係数の理論解析と実験的評価

Abstract

Plasma energy transmission property through the sheath in front of the tungsten plate is studied for the virgin and nanostructured tungstens in helium plasma with two electron temperature components. It is found that the energy transmission factor for non-defected virgin tungsten is roughly a half of that for nanostructured black-color tungsten. The theory for the energy transmission factor for two electron temperature plasma is developed including secondary electron emission and ion energy reflection coefficient, and is compared with experimental result.