Diamagnetic drift effects on ion Bernstein mode propagation in a plasma slab

Journal Article · Thu Sep 01 04:00:00 EDT 1988 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.866537· OSTI ID:6917892

Ferraro, R D; Fried, B D

A one-dimensional infinite-order differential equation that describes the propagation of small amplitude electrostatic waves through a uniformly magnetized inhomogeneous plasma slab is derived. The spatially varying coefficients of the equation may be written in terms of an arbitrary density profile function provided that the velocity space distribution of the equilibrium is Maxwellian and the plasma is charge neutral. Ion Bernstein waves with frequencies between the first and second ion cyclotron harmonics and wavelengths along the density inhomogeneity larger than the ion Larmor radius are adequately modeled by truncating the differential equation at second order. Using a single mode electrostatic antenna to investigate the role of the diamagnetic drift on Bernstein wave propagation, a wavenumber dependence in the position of the low density cutoff for propagation is found, resulting in a preferential coupling of the antenna to waves with moderate k/sub z/parallel B propagating antiparallel to the ion diamagnetic drift. Moderate levels of Bernstein wave activity inside the plasma are demonstrated for an antenna located in the evanescent region.

• Research Organization: Department of Physics, University of California, Los Angeles, California 90024-1547
• OSTI ID: 6917892
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 31:9; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
ANTENNAS
BERNSTEIN MODE
DIAMAGNETISM
DIFFERENTIAL EQUATIONS
ELECTRICAL EQUIPMENT
ELECTROSTATICS
EQUATIONS
EQUIPMENT
INHOMOGENEOUS PLASMA
INTEGRAL EQUATIONS
ION DRIFT
MAGNETISM
MAGNETIZATION
ONE-DIMENSIONAL CALCULATIONS
OSCILLATION MODES
PLASMA
SLABS