RT info:eu-repo/semantics/article
T1 Resonances and oscillatory behavior near multi-species plasma equilibria
A1 Núñez Jiménez, Manuel
K1 Electromagnetism
K1 Electric currents
K1 Reversible process
K1 Wentzel-Kramers-Brillouin approximation
K1 Equations of fluid dynamics
K1 Navier Stokes equations
K1 Electron kinetic energy
K1 Asymptotic analysis
K1 Generating functions
K1 Magnetic fields
AB We consider dynamic multi-species plasma equilibria whose variables depend on a single spatialcoordinate and linear perturbations of these. The linearized system may be reduced to a second-orderone satisfied by the respective fluid streamfunctions. For the two-species case, the electron mass is aparameter small enough for a WKB asymptotic analysis to be justified. It turns out that the pointswhere either the ion or electron equilibrium velocity equals the ratio between the temporaland 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 ofsingular points in the balance between the different contributions to the electron kinetic energy isexplored.
PB American Institute of Physics
SN 1070-664X
YR 2014
FD 2014
LK http://uvadoc.uva.es/handle/10324/39945
UL http://uvadoc.uva.es/handle/10324/39945
LA eng
NO PHYSICS OF PLASMAS 21, 032117 (2014)
NO Producción Científica
DS UVaDOC
RD 22-nov-2024