Journal article
Plasma instabilities in high electric fields
We analyze nonequilibrium screening with nonequilibrium Green function techniques. By employing the generalized Kadanoff-Baym ansatz to relate the correlation function to the nonequilibrium distribution function, the latter of which is assumed to be a shifted Maxwellian, an analytically tractable expression is derived for the nonequilibrium dielectric function epsilon(K, omega).
For certain values of momenta K and frequency omega, Imepsilon(K, omega) becomes negative, implying a plasma instability. This new instability exists only for strong electric fields, underlining its nonequilibrium origin.
Language: | English |
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Year: | 1994 |
Pages: | 474-479 |
ISSN: | 10953787 , 1063651x , 24700053 and 24700045 |
Types: | Journal article |
DOI: | 10.1103/PhysRevE.50.474 |
ORCIDs: | Jauho, Antti-Pekka |