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Langmuir wave linear evolution in inhomogeneous nonstationary anisotropic plasma

Phys. Plasmas 16, 112101 (2009); doi:10.1063/1.3250983

Published 2 November 2009

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I. Y. Dodin, V. I. Geyko, and N. J. Fisch
Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08544, USA
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 E-tilde universally scales with the electron density N as E-tilde [proportional]N3/4 in homogeneous plasma, whereas the wavevector evolution varies depending on the wave geometry. ©2009 American Institute of Physics
History: Received 22 July 2009; accepted 29 September 2009; published 2 November 2009
Permalink: http://link.aip.org/link/?PHPAEN/16/112101/1
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KEYWORDS and PACS

Keywords
PACS
  • 52.35.Fp
    Plasma electrostatic waves and oscillations
  • 52.25.-b
    Plasma properties
  • YEAR: 2009

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1070-664X (print)   1089-7674 (online)
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