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Plasma sheath in the presence of an oblique magnetic field

B P Pandey, A Samarian, S V Vladimirov2008年Plasma Physics and Controlled FusionIF 2.2出版社

In this work the structure of a plasma sheath in the presence of an oblique magnetic field is investigated. The effect of plasma magnetization, plasma ionization and plasma–neutral collisions on the sheath is examined for different orientations of the magnetic field. It is shown that the width of the plasma sheath is dependent not only on the collision frequencies and the plasma magnetization but also on the angle of magnetic field orientation. The size of the sheath layer decreases with the increase in the angle between the magnetic field and wall. The grain inside the sheath acquires a more positive charge when the magnetic field is perpendicular to the wall in comparison with the parallel to the wall case. This results in the different levitational equilibrium of the grain. The implication of the results for measuring the sheath characteristics is discussed.

日本語訳

抄録: 本稿では、斜め磁場の存在下におけるプラズマシースの構造を調査する。磁場の異なる配向に対して、プラズマの磁化、プラズマの電離、およびプラズマと中性粒子の衝突がシースに及ぼす影響を検討する。プラズマシースの幅は、衝突周波数とプラズマの磁化だけでなく、磁場の配向角度にも依存することが示される。シース層の大きさは、磁場と壁の間の角度が増加するにつれて減少する。シース内部の粒子は、磁場が壁に平行な場合と比較して、磁場が壁に垂直な場合により正の電荷を獲得する。この結果、粒子の浮遊平衡が異なるものとなる。シース特性の測定に対する結果の意義について考察する。

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Plasma sheath
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