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Title: Magnetohydrodynamic stability in a levitated dipole

Abstract

Plasma confined by a magnetic dipole is stabilized, at low beta, by magnetic compressibility. The ideal magnetohydrodynamic (MHD) requirements for stability against interchange and high-n ballooning modes are derived at arbitrary beta for a fusion grade laboratory plasma confined by a levitated dipole. A high beta MHD equilibrium is found numerically with a pressure profile near marginal stability for interchange modes, a peak local beta of {beta}{approximately}10, and volume averaged beta of {bar {beta}}{approximately}0.5. This equilibrium is demonstrated to be ballooning stable on all field lines. {copyright} {ital 1999 American Institute of Physics.}

Authors:
; ;  [1]
  1. Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
Publication Date:
OSTI Identifier:
362680
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 6; Journal Issue: 9; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION; PLASMA CONFINEMENT; LEVITATION; MAGNETIC DIPOLES; MAGNETOHYDRODYNAMICS; MHD EQUILIBRIUM; BALLOONING INSTABILITY; ASTROPHYSICS

Citation Formats

Garnier, D.T., Kesner, J., and Mauel, M.E. Magnetohydrodynamic stability in a levitated dipole. United States: N. p., 1999. Web. doi:10.1063/1.873601.
Garnier, D.T., Kesner, J., & Mauel, M.E. Magnetohydrodynamic stability in a levitated dipole. United States. doi:10.1063/1.873601.
Garnier, D.T., Kesner, J., and Mauel, M.E. Wed . "Magnetohydrodynamic stability in a levitated dipole". United States. doi:10.1063/1.873601.
@article{osti_362680,
title = {Magnetohydrodynamic stability in a levitated dipole},
author = {Garnier, D.T. and Kesner, J. and Mauel, M.E.},
abstractNote = {Plasma confined by a magnetic dipole is stabilized, at low beta, by magnetic compressibility. The ideal magnetohydrodynamic (MHD) requirements for stability against interchange and high-n ballooning modes are derived at arbitrary beta for a fusion grade laboratory plasma confined by a levitated dipole. A high beta MHD equilibrium is found numerically with a pressure profile near marginal stability for interchange modes, a peak local beta of {beta}{approximately}10, and volume averaged beta of {bar {beta}}{approximately}0.5. This equilibrium is demonstrated to be ballooning stable on all field lines. {copyright} {ital 1999 American Institute of Physics.}},
doi = {10.1063/1.873601},
journal = {Physics of Plasmas},
number = 9,
volume = 6,
place = {United States},
year = {1999},
month = {9}
}