Magnetic-divertor stabilization of an axisymmetric plasma with anisotropic temperature | Zendy

Y. Sasagawa | Zendy; I. Katanuma | Zendy; Y. Mizoguchi | Zendy; T. Cho | Zendy; В. П. Пастухов | Zendy

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Magnetic-divertor stabilization of an axisymmetric plasma with anisotropic temperature

Author(s) -

Y. Sasagawa,

I. Katanuma,

Y. Mizoguchi,

T. Cho,

В. П. Пастухов

Publication year - 2006

Publication title -

physics of plasmas

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.75

H-Index - 160

eISSN - 1089-7674

pISSN - 1070-664X

DOI - 10.1063/1.2402912

Subject(s) - gyroradius , physics , divertor , plasma , magnetohydrodynamic drive , magnetohydrodynamics , ion , anisotropy , magnetic field , atomic physics , radius , rotational symmetry , instability , condensed matter physics , tokamak , mechanics , optics , quantum mechanics , computer security , computer science

Magnetohydrodynamic stabilization of an axisymmetric mirror plasma with a magnetic divertor is studied. An equation is found for the flute modes, which includes the stabilizing influence of ion temperature anisotropy and nonparaxial magnetic fields, as well as a finite ion Larmor radius. It is shown that if the density profile is sufficiently gentle, then the nonparaxial configuration can stabilize all modes as long as ion temperature is radially uniform. This can be demonstrated even when the density vanishes on the separatrix and even for small ion Larmor radii. It is found, however, that the ion temperature gradient makes the unstable region wider; high ion temperature is required to stabilize the flute mode

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