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Low-frequency modes in a two-species plasma

Published online by Cambridge University Press:  13 March 2009

Y. S. Satya ,
K. M. Jain ,
S. Guha  and
Mridul Bose
Y. S. Satya
Affiliation:
Centre of Energy Studies, Indian Institute of Technology, Hauz Khas, New Delhi-110016, India
K. M. Jain
Affiliation:
Department of Physics, Government Arts and Science College, Durg (M.P.), 491 002, India
S. Guha
Affiliation:
Department of Physics, Ravishankar University, Raipur, 492 010 M.P., India
Mridul Bose
Affiliation:
Department of Physics, Ravishankar University, Raipur, 492 010 M.P., India
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Abstract

A systematic and comprehensive study of linear and nonlinear analyses of the propagation of low-frequency modes in two-ion-species plasma has been made. Two new non-propagating modes on different ion time-scales are reported. These modes are excited by nonlinear coupling with the external pump. The threshold field of the pump and the growth rates of the various modes above the threshold are also calculated. A comparison of the results with those of single-ion-species plasma shows that the non-propagating mode on the fast ion time-scale excites the oscillating two-stream instability. In addition, the mode corresponding to ωr = 0 on the slow ion time-scale becomes important nonlinearly and excites a new type of instability. It is interesting to note that the threshold electric fields excitation of these instabilities are the same.

Type
Research Article
Information
Journal of Plasma Physics , Volume 34 , Issue 2 , October 1985 , pp. 247 - 258
Copyright
Copyright © Cambridge University Press 1985

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References

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