Anomalous transverse electron diffusion in strong magnetic fields caused by electric field fluctuations

Journal Article · Mon Aug 01 00:00:00 EDT 1983 · Sov. Phys. - Tech. Phys. (Engl. Transl.); (United States)

OSTI ID:5089369

Moizhes, B Y

The Kubo formula is used to provide an initial expression for D/sub x/x. A correlation function for the electric field is introduced in the self-consistent field approximation. The Dreizin-Dykhne law D/sub x//sub x/ = 1.2((..pi../6)(c/sup 2//H/sup 2/) (k/sub B/T/q)/sup 2/<(deltan/n)>1/D/sup 1/2//sub z/z)/sup 2/3/ is derived for the case of fields produced by density irregularities in semiconductors (the constant 2 is valid for a Gaussian correlation function). An expression is derived for the anomalous electron diffusion coefficient (heat conductivity) associated with plasma turbulence in tokamaks. For particles drifting through the system, D/sub perpendicular/approx.H/sup -2/, while for trapped particles the equation D/sub perpendicular/approx.(c/H)h/sub B/Te/q(<(deltan/n)/sup 2/>)/sup 1/2/ (Bohm diffusion) is derived. If available measurements of the change deltan/n are used, the values calculated for tau/sub E/e are found to have the same order of magnitude as the experimental results.

• Research Organization: All-Union Scientific-Research Institute for Current Source Design and Engineering, Leningrad Division
• OSTI ID: 5089369
• Journal Information: Sov. Phys. - Tech. Phys. (Engl. Transl.); (United States), Vol. 28:8
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
SEMICONDUCTOR MATERIALS
CHARGED-PARTICLE TRANSPORT
TOKAMAK DEVICES
THERMAL CONDUCTIVITY
CORRELATION FUNCTIONS
DIFFUSION
ELECTRIC FIELDS
ELECTRONS
MAGNETIC FIELDS
PLASMA INSTABILITY
TURBULENCE
CLOSED PLASMA DEVICES
ELEMENTARY PARTICLES
FERMIONS
FUNCTIONS
INSTABILITY
LEPTONS
MATERIALS
PHYSICAL PROPERTIES
RADIATION TRANSPORT
THERMODYNAMIC PROPERTIES
THERMONUCLEAR DEVICES
700105* - Fusion Energy- Plasma Research- Plasma Kinetics-Theoretical- (-1987)