Magnetohydrodynamic stability in a levitated dipole

Details Magnetohydrodynamic stability in a levitated dipole Magnetohydrodynamic stability in a levitated dipole

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999phpl....6.3431g&link_type=abstract

Physics of Plasmas, Volume 6, Issue 9, pp. 3431-3434 (1999).

Physics

38

Macroinstabilities, Magnetic Confinement And Equilibrium, Theory, Design, And Computerized Simulation, Magnetohydrodynamics And Plasmas

Scientific paper

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 β~10, and volume averaged beta of β~0.5. This equilibrium is demonstrated to be ballooning stable on all field lines.

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