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Resistive Electrostatic Ion Cyclotron Instability in Plasmas

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2 Author(s)
Lee, Kai Fong ; Department of Electronics the Chinese University of Hong Kong Shatin, N. T., Hong Kong ; Luhmann, N.C., Jr.

The stability of electrostatic ion cyclotron waves propagating obliquely with respect to the background magnetic field is studied for collisional, fully-ionized plasmas in which there is a relative field-aligned streaming between electrons and ions. It is found that electron-ion collisions, in conjunction with electron streaming, provides a mechanism for instability. The role of electron streaming is to supply a source of free energy and the role of electron-ion collisions is to restrict the field-aligned mobility of the electrons, thus preventing them from establishing a Boltzmann equilibrium. Ion-ion collisions and finite ion Larmor radius are found to exert a stabilizing influence. The instability is analyzed for both current-carrying plasmas and counterstreaming-beam-plasma systems.

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Plasma Science, IEEE Transactions on  (Volume:4 ,  Issue: 1 )