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Complex plasmas: forces and dynamical behaviour

A Piel, O Arp, D Block, I Pilch, T Trottenberg, S Käding, A Melzer, H Baumgartner, C Henning, M Bonitz2008年Plasma Physics and Controlled FusionIF 2.2出版社

Some peculiar features of complex (dusty) plasmas are reviewed and discussed. In the plasma sheath, the supersonic ion flow causes charge accumulation in the ion wake, which leads to attractive forces between like-charged dust particles. Ion drag is an important force under microgravity conditions, where it produces dust-free regions (voids). It is shown that the same mechanism determines dust confinement in anodic plasmas and leads to torus-shaped dust clouds in magnetized plasmas. Spherical plasma crystals are an interesting object of study which have led to an understanding of the influence of shielding on the structure of trapped particle clouds.

日本語訳

複合(ダスト)プラズマのいくつかの特異な特徴を概説し、考察する。プラズマシース内では、超音速イオン流がイオン後流における電荷の蓄積を引き起こし、これが同符号に帯電したダスト粒子間の引力をもたらす。イオン抗力は微小重力条件下での重要な力であり、そこでダストのない領域(ボイド)を生成する。同じメカニズムが陽極プラズマにおけるダストの閉じ込めを決定し、磁化プラズマにおいてトーラス状のダスト雲をもたらすことが示される。球状プラズマ結晶は興味深い研究対象であり、捕捉された粒子雲の構造に対する遮蔽の影響の理解につながっている。

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Dusty plasma
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