Langmuir wave linear evolution in inhomogeneous nonstationary anisotropic plasma

I. Y. Dodin, V. I. Geyko, N. J. Fisch

Research output: Contribution to journalArticle

30 Scopus citations

Abstract

A hydrodynamic equation describing the linear evolution of a nondissipative Langmuir wave in inhomogeneous nonstationary anisotropic plasma without magnetic field is derived in the geometrical optics approximation. The continuity equation for the wave action density, anticipated from general principles, is then confirmed ab initio, and the conditions for the action conservation are formulated. Given those, the wave field Ẽ universally scales with the electron density N as Ẽ ∝ N3/4 in homogeneous plasma, whereas the wavevector evolution varies depending on the wave geometry.

Original languageEnglish (US)
Article number112101
Number of pages1
JournalPhysics of Plasmas
Volume16
Issue number11
DOIs
StatePublished - Dec 16 2009

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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