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Plasma sheath evolution from perturbed electrodes in a negative-ion plasma. Part 2. Experiment and PIC simulation

  • SEUNGJUN YI (a1), YASSER EL-ZEIN (a2), KARL E. LONNGREN (a1) (a2) and TERENCE E. SHERIDAN (a3)

Abstract

The two-dimensional spatial and temporal evolution of a plasma surrounding an electrode whose potential is suddenly decreased is experimentally investigated. The electrode contains a localized convex or a localized concave perturbation. The quasineutral plasma consists of positive ions and various proportions of negative ions and electrons. The results are compared and contrasted with those that are obtained numerically using a particle-in-cell (PIC) simulation and those that had previously been obtained using a fluid-model code.

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Plasma sheath evolution from perturbed electrodes in a negative-ion plasma. Part 2. Experiment and PIC simulation

  • SEUNGJUN YI (a1), YASSER EL-ZEIN (a2), KARL E. LONNGREN (a1) (a2) and TERENCE E. SHERIDAN (a3)

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