Magnetic field line ergodicity in the edge plasma due to an ion-Bernstein wave antenna

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

DOI:https://doi.org/10.1063/1.866760· OSTI ID:5372368

Myra, J R

Large ponderomotive forces can occur near a high-power ion cyclotron range of frequency antenna, particularly for the parallel electric field polarization used to excite ion-Bernstein waves (IBW). The magnetohydrodynamic (MHD) equilibrium of the edge plasma is modified by these forces when the antenna is highly localized poloidally and toroidally. Magnetic islands develop at the edge, near q = m/n, where chemically bondmchemically bondless than or equal to..pi..a/w/sub a/ and chemically bondnchemically bondless than or equal to..pi..R/l/sub a/, with w/sub a/ and l/sub a/ the width and length of the antenna, respectively. Ergodicity of the magnetic field lines may be expected when the islands overlap. Numerical calculations of the island overlap criteria are presented for two examples relevant to present day (IBW) heating experiments.

• Research Organization: Science Applications International Corporation, Plasma Research Institute, 1515 Walnut Street, Boulder, Colorado 80302
• OSTI ID: 5372368
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 31:5; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
ANTENNAS
BERNSTEIN MODE
DATA
ELECTRIC POTENTIAL
ELECTRICAL EQUIPMENT
END EFFECTS
EQUILIBRIUM
EQUIPMENT
FLUID MECHANICS
HEATING
HYDRODYNAMICS
INFORMATION
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC FLUX
MAGNETIC ISLANDS
MAGNETOHYDRODYNAMICS
MECHANICS
MODIFICATIONS
NUMERICAL DATA
OSCILLATION MODES
PLASMA
PLASMA HEATING