Helicities of Electron Magnetohydrodynamic Currents and Fields in Plasmas

Journal Article · Mon Jan 30 04:00:00 EST 1995 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.74.702· OSTI ID:6577101

Stenzel, R L; Urrutia, J M; Rousculp, C L ^[1]

---

1. Department of Physics, University of California, Los Angeles, California 90024-1547 (United States)

Transient plasma currents are excited with pulsed electrodes in a large laboratory plasma in a parameter regime characterized by electron magnetohydrodynamics ([omega][sub [ital ce]][sup [minus]1][much lt][ital t][sub pulse]/2[pi][much lt][omega][sub [ital ci]][sup [minus]1]). The combination of Hall currents and field-aligned currents gives rise to three-dimensional vortices whose helicity is manifested by linked and knotted current and field lines. The relation between magnetic helicity, [integral]A[center dot]B [ital dV], current helicity, [integral]J[center dot]B [ital dV], and their transport properties are investigated.

• OSTI ID: 6577101
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 74:5; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700320* -- Plasma Diagnostic Techniques & Instrumentation-- (1992-)
CURRENTS
DATA
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTRICAL TRANSIENTS
ELECTRODES
ELECTRONS
ELEMENTARY PARTICLES
EQUIPMENT
EXPERIMENTAL DATA
FERMIONS
FLUID MECHANICS
HALL EFFECT
HELICITY
HYDRODYNAMICS
INFORMATION
LEAKAGE CURRENT
LEPTONS
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
MATHEMATICS
MECHANICS
NUMERICAL DATA
PARTICLE PROPERTIES
PLASMA
PLASMA SWITCHES
PULSES
SWITCHES
THREE-DIMENSIONAL CALCULATIONS
TOPOLOGY
TRANSIENTS
VECTOR FIELDS
VOLTAGE DROP
VORTICES