Langmuir wave linear evolution in inhomogeneous nonstationary anisotropic plasma

Journal Article · Sun Nov 15 04:00:00 EST 2009 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3250983· OSTI ID:21274236

Dodin, I Y; Geyko, V I; Fisch, N J ^[1]

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1. Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08544 (United States)

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_to}N{sup 3/4} in homogeneous plasma, whereas the wavevector evolution varies depending on the wave geometry.

• OSTI ID: 21274236
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 11 Vol. 16; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANISOTROPY
CONTINUITY EQUATIONS
ELECTRON DENSITY
EVOLUTION
HYDRODYNAMICS
INHOMOGENEOUS PLASMA
PLASMA DENSITY
PLASMA WAVES