Wave excitation in inhomogeneous dielectric media

Journal Article · Thu Nov 15 04:00:00 EST 2007 · Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

DOI:https://doi.org/10.1103/PHYSREVE.76.055401· OSTI ID:21076266

Cary, John R ^[1]; Nong, Xiang ^[1]

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1. Center for Integrated Plasma Studies, University of Colorado at Boulder, Boulder, Colorado 80309 (United States)

The equation describing the propagation of a mode driven by external currents in an inhomogeneous dielectric is derived from the principle of the conservation of wave energy density and wave momentum density. The wave amplitude in steady state is obtained in terms of a simple spatial integration of the driving current. The contribution from the spatial derivative of the dielectric response is found to be important. The analytical predictions are verified through comparison with {delta}f particle-in-cell computations of electron Bernstein wave propagation, thus showing applicability to kinetic systems.

• OSTI ID: 21076266
• Journal Information: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, Journal Name: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics Journal Issue: 5 Vol. 76; ISSN PLEEE8; ISSN 1063-651X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BERNSTEIN MODE
CALCULATION METHODS
DIELECTRIC MATERIALS
DIELECTRIC PROPERTIES
ELECTRONS
ENERGY DENSITY
NONLINEAR PROBLEMS
PLASMA
PLASMA SIMULATION
PLASMA WAVES
STEADY-STATE CONDITIONS
WAVE EQUATIONS
WAVE PROPAGATION