Effect of Trapped Energetic Ions on MHD Activity in Spherical Tori | Zendy

R. B. White | Zendy; Ya.I. Kolesnichenko | Zendy; V. V. Lutsenko | Zendy; V. S. Marchenko | Zendy

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Effect of Trapped Energetic Ions on MHD Activity in Spherical Tori

Author(s) -

R. B. White,

Ya.I. Kolesnichenko,

V. V. Lutsenko,

V. S. Marchenko

Publication year - 2002

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/798181

Subject(s) - magnetohydrodynamics , ion , torus , physics , tearing , beta (programming language) , atomic physics , plasma , mode (computer interface) , instability , magnetic field , mechanics , thermodynamics , nuclear physics , geometry , quantum mechanics , mathematics , computer science , programming language , operating system

It is shown that the increase of beta (the ratio of plasma pressure to the magnetic field pressure) may change the character of the influence of trapped energetic ions on MHD stability in spherical tori. Namely, the energetic ions, which stabilize MHD modes (such as the ideal-kink mode, collisionless tearing mode, and semi-collisional tearing mode) at low beta, have a destabilizing influence at high beta unless the radial distribution of the energetic ions is very peaked

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