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Plasma sheath evolution from perturbed electrodes in a negative-ion plasma

  • YASSER EL-ZEIN (a1), SEUNGJUN YI (a2), KARL E. LONNGREN (a1) (a2), IGOR ALEXEFF (a3), TERRENCE E. SHERIDAN (a4) (a5) and HULBERT HSUAN (a6)...

Abstract

The two-dimensional spatial and temporal evolution of the components of a plasma surrounding an electrode whose potential is suddenly decreased is investigated numerically. The electrode contains a localized convex or a localized concave voltage perturbation. The quasineutral plasma consists of positive ions and various proportions of negative ions and electrons. The results are compared and contrasted with those obtained with a uniform electrode under identical plasma conditions.

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Plasma sheath evolution from perturbed electrodes in a negative-ion plasma

  • YASSER EL-ZEIN (a1), SEUNGJUN YI (a2), KARL E. LONNGREN (a1) (a2), IGOR ALEXEFF (a3), TERRENCE E. SHERIDAN (a4) (a5) and HULBERT HSUAN (a6)...

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