Plasma instabilities in high electric fields

Publication: Research - peer-reviewJournal article – Annual report year: 1994

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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.
Original languageEnglish
JournalPhysical Review E. Statistical, Nonlinear, and Soft Matter Physics
Volume50
Issue number1
Pages (from-to)474-479
ISSN1063-651X
DOIs
StatePublished - 1994
Peer-reviewedYes

Bibliographical note

Copyright (1994) by the American Physical Society.

CitationsWeb of Science® Times Cited: 13

Keywords

  • SYSTEMS, SEMICONDUCTORS, QUANTUM TRANSPORT-EQUATIONS
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