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Título
Resonances and oscillatory behavior near multi-species plasma equilibria
Autor
Año del Documento
2014
Editorial
American Institute of Physics
Descripción
Producción Científica
Documento Fuente
PHYSICS OF PLASMAS 21, 032117 (2014)
Abstract
We consider dynamic multi-species plasma equilibria whose variables depend on a single spatial
coordinate and linear perturbations of these. The linearized system may be reduced to a second-order
one satisfied by the respective fluid streamfunctions. For the two-species case, the electron mass is a
parameter small enough for a WKB asymptotic analysis to be justified. It turns out that the points
where either the ion or electron equilibrium velocity equals the ratio between the temporal
and transversal frequencies of the perturbation are turning or singular points of the system,
connecting exponentially increasing or decreasing solutions to oscillatory ones. The crucial role of
singular points in the balance between the different contributions to the electron kinetic energy is
explored.
Palabras Clave
Electromagnetism
Electric currents
Reversible process
Wentzel-Kramers-Brillouin approximation
Equations of fluid dynamics
Navier Stokes equations
Electron kinetic energy
Asymptotic analysis
Generating functions
Magnetic fields
ISSN
1070-664X
Revisión por pares
SI
Version del Editor
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
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