Parametric decay into ion cyclotron waves and drift waves in multi-ion species plasma

M. Ono, M. Porkolab, R. P.H. Chang

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Parametric decay processes near the ion cyclotron frequency are investigated experimentally and theoretically in multi-ion species plasmas. The relevant theoretical dispersion relation of the parametric coupling is derived, including the ion drift motion. Experimental data obtained in the Princeton L-4 device verify these theoretical predictions in some detail. In a helium-neon plasma, the relative ion drift motion excites electrostatic ion cyclotron waves (the kinetic ion-ion hybrid mode) when ω0 > ΩHe + ΩNe- In a region of large density gradient, the ion drift motion also excites low-frequency drift waves when ω0He + ω*. The experimental data are found to agree well with the theory. The relevance of these processes to ion cyclotron heating of fusion plasmas is discussed.

Original languageEnglish
Pages (from-to)1656-1674
Number of pages19
JournalPhysics of Fluids
Volume23
Issue number8
DOIs
Publication statusPublished - Jan 1 1980

ASJC Scopus subject areas

  • Computational Mechanics
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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