Helicity Injection by Knotted Antennas into Electron Magnetohydrodynamical Plasmas

Journal Article · Fri Aug 01 00:00:00 EDT 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.79.837· OSTI ID:548826

Rousculp, C L; Stenzel, R L ^[1]

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1. Department of Physics and Astronomy, University of California, Los Angeles, California 90095-1547 (United States)

A fully three-dimensional computer simulation of an ideal electron magnetohydrodynamical plasma is performed. By introducing various pulsed inductive antenna sources, magnetic helicity (H={bold A}{center_dot}{bold B}dV) injection is studied. Confirming experimental results, a simple loop provides no net helicity injection. Linked and knotted antennas, however, do inject helicity and preferentially radiate whistler wave packets parallel or antiparallel to the ambient magnetic field. Relative efficiencies of these antennas are reported as well as their unique directional properties. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 548826
• Journal Information: Physical Review Letters, Vol. 79, Issue 5; Other Information: PBD: Aug 1997
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
PLASMA SIMULATION
MAGNETOHYDRODYNAMICS
ELECTRONS
HELICITY
INJECTION
ANTENNAS
WAVE PACKETS
MAGNETIC FIELDS
THREE-DIMENSIONAL CALCULATIONS