Published June 2007 | Version v1
Journal article Metadata-only

Interaction of scrape-off layer currents with magnetohydrodynamical instabilities in tokamak plasmas

Creators

  • 1. Institute for Fusion Studies, Department of Physics, University of Texas at Austin, Austin, Texas 78712 (United States)

Description

A simple theoretical model is developed which describes how current eddies are excited in the scrape-off layer (SOL) of a large-aspect-ratio, low-β, circular cross-section tokamak by time-varying magnetohydrodynamical instabilities originating from within the plasma. This model is used to study the interaction of SOL currents with tearing modes and resistive wall modes in a typical tokamak plasma. SOL currents are found to be fairly effective at braking the rotation of tearing modes, and to have a significant destabilizing effect on resistive wall modes

Additional details

Identifiers

DOI
10.1063/1.2747624;

Publishing Information

Journal Title
Physics of Plasmas
Journal Volume
14
Journal Issue
6
Journal Page Range
p. 062505-062505.8
ISSN
1070-664X
CODEN
PHPAEN

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
39004597
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Descriptors DEI
ASPECT RATIO; MAGNETOHYDRODYNAMICS; PLASMA; PLASMA CONFINEMENT; PLASMA SCRAPE-OFF LAYER; ROTATION; TEARING INSTABILITY; TOKAMAK DEVICES
Descriptors DEC
BOUNDARY LAYERS; CLOSED PLASMA DEVICES; CONFINEMENT; DIMENSIONLESS NUMBERS; FLUID MECHANICS; HYDRODYNAMICS; INSTABILITY; LAYERS; MECHANICS; MOTION; PLASMA INSTABILITY; PLASMA MACROINSTABILITIES; THERMONUCLEAR DEVICES

Optional Information

Notes
(c) 2007 American Institute of Physics