|Author||Lee, W. W.|
|Source||United States Department of Energy Office of Scientific and Technical Information|
|Subject Keyword||PLASMA PHYSICS AND FUSION TECHNOLOGY ♦ ALFVEN WAVES ♦ BALANCES ♦ COLLISIONLESS PLASMA ♦ EQUATIONS ♦ FLUCTUATIONS ♦ LARMOR RADIUS ♦ MAGNETOHYDRODYNAMICS ♦ MHD EQUILIBRIUM ♦ PLASMA PRESSURE ♦ PRESSURE GRADIENTS|
|Abstract||The effort to obtain a set of MagnetoHydroDynamic (MHD) equations for a magnetized collisionless plasma was started nearly 60 years ago by Chew et al. [Proc. R. Soc. London, Ser. A 236(1204), 112–118 (1956)]. Many attempts have been made ever since. Here, we will show the derivation of a set of these equations from the gyrokinetic perspective, which we call it gyrokinetic MHD, and it is different from the conventional ideal MHD. However, this new set of equations still has conservation properties and, in the absence of fluctuations, recovers the usual MHD equilibrium. Furthermore, the resulting equations allow for the plasma pressure balance to be further modified by finite-Larmor-radius effects in regions with steep pressure gradients. The present work is an outgrowth of the paper on “Alfven Waves in Gyrokinetic Plasmas” by Lee and Qin [Phys. Plasmas 10, 3196 (2003)].|
|Learning Resource Type||Article|
|Publisher Place||United States|
|Journal||Physics of Plasmas|
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