Plasma ionization through wave-particle interaction in a capacitively coupled radio-frequency discharge

D. O'Connell, T. Gans, D. Vender, U. Czarnetzki, R. Boswell

Research output: Contribution to journalArticlepeer-review

Abstract

Phase resolved optical emission spectroscopy, with high temporal resolution, shows that wave-particle interactions play a fundamental role in sustaining capacitively coupled rf plasmas. The measurements are in excellent agreement with a simple particle-in-cell simulation. Excitation and ionization mechanisms are dominated by beam-like electrons, energized through the advancing and retreating electric fields of the rf sheath. The associated large-amplitude electron waves, driven by a form of two-stream instability, result in power dissipation through electron trapping and phase mixing. (c) 2007 American Institute of Physics.

Original languageEnglish
Article number034505
Number of pages4
JournalPhysics of Plasmas
Volume14
Issue number3
DOIs
Publication statusPublished - Mar 2007

Keywords

  • RF-DISCHARGES
  • SIMULATION
  • SHEATH
  • SPACE

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