Abstract
In the presence of an electron drift relative to ions, the ion acoustic wave is subject to the kinetic instability which takes place if the directed electron speed exceeds the ion acoustic speed. The instability threshold is very different in the case of one quasi-neutral electron-ion plasma propagating through another quasi-neutral (target) plasma. The threshold velocity of the propagating plasma may be well below the ion acoustic speed of the static plasma.
Highlights
Ion acoustic mode in permeating plasmasThis content has been downloaded from IOPscience
An electron drift relative to static ions can make the ion acoustic wave growing due to the kinetic instability which takes place if the directed electron speed exceeds the ion acoustic speed
A much lower instability threshold may be obtained in the case of two interpenetrating plasmas
Summary
This content has been downloaded from IOPscience. Please scroll down to see the full text. Ser. 511 012010 (http://iopscience.iop.org/1742-6596/511/1/012010) View the table of contents for this issue, or go to the journal homepage for more. Download details: IP Address: 134.58.253.57 This content was downloaded on 08/05/2014 at 08:14 Please note that terms and conditions apply
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