A mean field Ohm's law for collisionless plasmas

Journal Article · Sun Oct 31 23:00:00 EST 1993 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.860604· OSTI ID:5966421

Biglari, H ^[1]; Diamond, P H ^[2]

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1. Princeton Plasma Physics Laboratory, Princeton University, P.O. Box 451, Princeton, New Jersey 08543 (United States)
2. Department of Physics 0139, University of California at San Diego, La Jolla, California 92093 (United States)

A mean field Ohm's law valid for collisionless plasmas is derived kinetically. It is shown that contrary to conventional thinking, the resulting hyperresistivity is significantly smaller than its fluid counterpart due to the fact that the turbulent decorrelation rate is linked to the rapid electron ballistic motion rather than the slower nonlinear mixing time. Moreover, the off-diagonal contributions to the parallel electron momentum flux are shown to result in Ohm's law renormalizations that dwarf the current diffusivity and break radial parity symmetry.

• DOE Contract Number: AC02-76CH03073; FG03-88ER53275
• OSTI ID: 5966421
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 5:11; ISSN 0899-8221; ISSN PFBPEI
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700330* -- Plasma Kinetics
Transport
& Impurities-- (1992-)
COLLISIONLESS PLASMA
EQUATIONS
INSTABILITY
KINETIC EQUATIONS
OHM LAW
PLASMA
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
RENORMALIZATION
TEARING INSTABILITY
TRANSPORT THEORY
TURBULENCE
VISCOSITY