Transport of Energetic Ions during Relaxation Oscillations in Plasmas of Spherical Tori | Zendy

Ya. I. Kolesnichenko | Zendy; V. V. Lutsenko | Zendy; R. B. White | Zendy; Yu. V. Yakovenko | Zendy

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Transport of Energetic Ions during Relaxation Oscillations in Plasmas of Spherical Tori

Author(s) -

Ya. I. Kolesnichenko,

V. V. Lutsenko,

R. B. White,

Yu. V. Yakovenko

Publication year - 2001

Publication title -

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

Language(s) - English

Resource type - Reports

DOI - 10.2172/775580

Subject(s) - sawtooth wave , plasma , beta (programming language) , magnetohydrodynamics , physics , ion , atomic physics , tokamak , spherical tokamak , torus , relaxation (psychology) , atmospheric pressure plasma , magnetic field , nuclear physics , geometry , quantum mechanics , psychology , social psychology , mathematics , computer science , computer vision , programming language

It is shown that the confinement of trapped energetic ions in spherical tokamaks during MHD events, such as sawtooth oscillations and internal reconnection events (IRE), essentially depends on beta (beta is the ratio of plasma pressure to the magnetic field pressure). Namely, when beta is high, the energetic ions are expelled from the plasma core, whereas they are only weakly influenced by the MHD activity at relatively low beta. Because of this, moderate rather than the highest possible beta may be preferable in spherical tokamaks

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