Accession Number:

ADA463595

Title:

Gyrotropic Guiding-Center Fluid Theory for Turbulent Inhomogeneous Magnetized Plasma

Descriptive Note:

Journal article

Corporate Author:

AIR FORCE RESEARCH LAB HANSCOM AFB MA SPACE VEHICLES DIRECTORATE

Personal Author(s):

• Jasperse, John R.
• Basu, Bamandas
• Lund, Eric J.
• Bouhram, Mehdi

Report Date:

2006-01-01

Pagination or Media Count:

15.0

Abstract:

In this paper, a new fluid theory is given in the guiding-center and gyrotropic approximation which is derivable from the Vlasov-Maxwell equations. The theory includes the effect of wave-particle interactions for the weakly turbulent, weakly inhomogeneous, nonuniformly magnetized plasma, and it is applicable to a variety of space and laboratory plasmas. It is assumed that the turbulence is random and electrostatic, and that the velocity-space Fokker-Planck operator can be used to calculate the correlation functions that describe the wave-particle interactions. Conservation laws are derived that relate the low-order velocity moments of the particle distributions to the turbulence. The theory is based on the work of Hubbard Proc. R. Soc. London, Ser. A 260,114 1961 and Ichimarti and Rosenbluth Phys. Fluids 13, 2778 1970. In the work presented here, the idea is proposed that the fluid equations can be solved 1 by using measurements of the turbulence to specify the electric-field fluctuations and 2 by using measurements of the low-order velocity moments to specify the initial and boundary conditions.

Descriptors:

• *PLASMAS(PHYSICS)
• *TURBULENCE
• *MAGNETIZATION
• *FLUID DYNAMICS
• VELOCITY
• DIFFERENTIAL GEOMETRY
• FOKKER PLANCK EQUATIONS
• HOMOGENEITY
• MAXWELLS EQUATIONS
• REPRINTS
• INTERACTIONS

Subject Categories:

• Fluid Mechanics
• Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE