Langmuir wave linear evolution in inhomogeneous nonstationary anisotropic plasma

Details Langmuir wave linear evolution in inhomogeneous nonstationary anisotropic plasma Langmuir wave linear evolution in inhomogeneous nonstationary anisotropic plasma

2009-07-24

arxiv.org/abs/0907.4270v1

Physics

Plasma Physics

Scientific paper

Equations describing the linear evolution of a non-dissipative Langmuir wave in inhomogeneous nonstationary anisotropic plasma without magnetic field are derived in the geometrical optics approximation. A continuity equation is obtained for the wave action density, and the conditions for the action conservation are formulated. In homogeneous plasma, the wave field E universally scales with the electron density N as E ~ N^{3/4}, whereas the wavevector evolution varies depending on the wave geometry.

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