TITLE

Kinetic instability of ion acoustic mode in permeating plasmas

AUTHOR(S)
Vranjes, J.; Poedts, S.; Ehsan, Zahida
PUB. DATE
July 2009
SOURCE
Physics of Plasmas;Jul2009, Vol. 16 Issue 7, p074501
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In plasmas with electron drift (current) relative to static 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 becomes different in the case of one quasineutral electron-ion plasma propagating through another static quasineutral (target) plasma. The threshold velocity of the propagating plasma may be well below the ion acoustic speed of the static plasma. Such a currentless instability may frequently be expected in space and astrophysical plasmas.
ACCESSION #
43493831

 

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