Published July 2004 | Version v1
Journal article Metadata-only

Nonlinear Analysis for Stabilization of Interchange Mode in LHD Plasmas

Creators

  • 1. National Institute for Fusion Science (Japan)
  • 2. Oak Ridge National Laboratory (United States)

Description

The nonlinear behavior of the interchange mode in Large Helical Device (LHD) plasma depends on the overlap of the vortices with different helicity. If the vortices are separated in the radial direction, each mode saturates mildly with generating the local flat regions in the pressure profile. In the case of significant overlap of the vortices, the appearance of large-scale convection results in sudden global reduction of the pressure. The sequence of the saturated pressure profile in the increase of beta can suppress the overlap. Self-organization of the pressure profile to suppress the overlap of the vortices can be the stabilizing mechanism in the LHD plasma

Additional details

Identifiers

URL
http://epubs.ans.org/;

Publishing Information

Journal Title
Fusion Science and Technology
Journal Volume
46
Journal Issue
1
Journal Page Range
p. 34-43
ISSN
1536-1055

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
38020179
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Descriptors DEI
CONVECTION; HELICITY; LHD DEVICE; NONLINEAR PROBLEMS; PLASMA; PLASMA PRESSURE; STABILIZATION; VORTICES
Descriptors DEC
CLOSED PLASMA DEVICES; ENERGY TRANSFER; HEAT TRANSFER; MASS TRANSFER; PARTICLE PROPERTIES; THERMONUCLEAR DEVICES

Optional Information

Copyright
Copyright (c) 2006 American Nuclear Society (ANS), United States, All rights reserved. http://epubs.ans.org/