Runaway electrons as a diagnostic of magnetic fluctuations in the edge plasma of the Texas Experimental Tokamak

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.860016· OSTI ID:7285332

Myra, J R; Catto, P J ^[1]; Wootton, A J; Bengtson, R D ^[2]; Wang, P W ^[3]

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1. Lodestar Research Corporation, Boulder, Colorado 80301 (United States)
2. Fusion Research Center, University of Texas, Austin, Texas 78712 (United States)
3. Plasma Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

Recent experimental and theoretical results are combined to explore the energy dependence of runaway and suprathermal electron diffusion. It is shown that a quasilinear theory containing both magnetic and electrostatic {ital E}{times}{ital B}-driven radial transport is consistent with the available experimental data, and supports the notion that magnetic turbulence dominates runaway diffusion but electrostatic turbulence dominates thermal diffusion in the edge plasma of the Texas Experimental Tokamak (TEXT) (Nucl. Technol./Fusion {bold 1}, 479 (1981)). These observations further expand the possibilities for employing runaway or suprathermal electrons as a diagnostic of the underlying transport mechanisms in a tokamak plasma.

• DOE Contract Number: FG02-88ER53263
• OSTI ID: 7285332
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 4:7; ISSN PFBPE; ISSN 0899-8221
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700310 -- Plasma Confinement-- (1992-)
700330* -- Plasma Kinetics
Transport
& Impurities-- (1992-)
CLOSED PLASMA DEVICES
DIFFUSION
ELECTRONS
ELEMENTARY PARTICLES
ENERGY DEPENDENCE
FERMIONS
FLUCTUATIONS
LEPTONS
RUNAWAY ELECTRONS
TEXT DEVICES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TRANSPORT THEORY
TURBULENCE
VARIATIONS