Journal of Statistical Physics

, Volume 39, Issue 5–6, pp 755–767 | Cite as

Light scattering studies of the ion acoustic instability in a positive column plasma

  • R. E. Slusher
  • C. M. Surko
  • C. A. Murray


Light scattering is used to study the amplitude, spectrum, and angular distribution of the saturated state of the ion acoustic instability in a He positive column plasma. The ion acoustic waves are driven unstable by the electron current in the column. The properties of the saturated state are studied as a function of the concentration of hydrogen impurities which are found to be present in positive column plasmas. At concentrations of a few percent, the hydrogen ions can cause linear wave damping. Their role in saturating the instability by nonlinear processes is studied by varying the hydrogen concentration.

Key words

Light scattering plasma instability ion-acoustic waves 


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Copyright information

© Plenum Publishing Corporation 1985

Authors and Affiliations

  • R. E. Slusher
    • 1
  • C. M. Surko
    • 1
  • C. A. Murray
    • 1
  1. 1.AT&T Bell LaboratoriesMurray Hill

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