The 2-D time-dependent response of a tearing mode magnetic island to a radio frequency (RF)-driven current may lead to strong nonlinear effects. An extended magnetohydrodynamics model shows first the prompt appearance of current sheets tending to shield the RF current effect and, subsequently, a nonlinear filamentation of the island structure that eventually proceeds in the coalescence of secondary islands.
Strong Nonlinear Effects in the Dynamics of Tearing Modes Controlled by Electron Cyclotron Current Drive
Lazzaro E
2011
Abstract
The 2-D time-dependent response of a tearing mode magnetic island to a radio frequency (RF)-driven current may lead to strong nonlinear effects. An extended magnetohydrodynamics model shows first the prompt appearance of current sheets tending to shield the RF current effect and, subsequently, a nonlinear filamentation of the island structure that eventually proceeds in the coalescence of secondary islands.File in questo prodotto:
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