Generation of whistler waves by a rotating magnetic field source

Journal Article · Fri Jan 15 00:00:00 EST 2010 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3274916· OSTI ID:21344641

Karavaev, A V; Gumerov, N A; Papadopoulos, K; Shao, Xi; Sharma, A S ^[1]; Gekelman, W; Gigliotti, A; Pribyl, P; Vincena, S ^[2]

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1. Department of Physics and Department of Astronomy, University of Maryland, College Park, Maryland 20742 (United States)
2. Department of Physics and Astronomy, University of California, Los Angeles, California 90095 (United States)

The paper discusses the generation of polarized whistler waves radiated from a rotating magnetic field source created via a novel phased orthogonal two loop antenna. The results of linear three-dimensional electron magnetohydrodynamics simulations along with experiments on the generation whistler waves by the rotating magnetic field source performed in the large plasma device are presented. Comparison of the experimental results with the simulations and linear wave properties shows good agreement. The whistler wave dispersion relation with nonzero transverse wave number and the wave structure generated by the rotating magnetic field source are also discussed. The phase velocity of the whistler waves was found to be in good agreement with the theoretical dispersion relation. The exponential decay rate of the whistler wave propagating along the ambient magnetic field is determined by Coulomb collisions. In collisionless case the rotating magnetic field source was found to be a very efficient radiation source for transferring energy along the ambient magnetic field lines.

• OSTI ID: 21344641
• Journal Information: Physics of Plasmas, Vol. 17, Issue 1; Other Information: DOI: 10.1063/1.3274916; (c) 2010 American Institute of Physics; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANTENNAS
DISPERSION RELATIONS
ELECTRONS
ENERGY TRANSFER
HYDROMAGNETIC WAVES
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
PHASE VELOCITY
PLASMA
PLASMA SIMULATION
RADIATION SOURCES
THREE-DIMENSIONAL CALCULATIONS
WHISTLERS
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EQUIPMENT
FERMIONS
FLUID MECHANICS
HYDRODYNAMICS
LEPTONS
MECHANICS
NOISE
RADIATIONS
RADIO NOISE
RADIOWAVE RADIATION
SIMULATION
VELOCITY