Nonlinear Phenomena Due to an m=1 Non-Resonant Current-Driven Mode in RFP with Relatively High S Number

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概要

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• In an RFP plasma with relatively high Lundquist number S, nonlinear phenomenadue to a single non-resonant current-driven mode with poloidal mode number m = 1are examined by using a numerical simulation of an incompressible plasma. In contrast to the low S number case, a new phenomenon, i.e., a nonlinear oscillation is ob-served, which is brought about by the nonlinear interaction of the m = 1 mode withitself. This nonlinear oscillation occurs around a helical equilibrium in close vicinityto the initial axisymmetric equilibrium and is damped by the energy cascade to thehigher harmonics and dissipation. The higher harmonics convert the global flow patfern into the local one, which creates anti-parallel magnetic field lines. Consequently,a nonlinear reconnection occurs after the nonlinear oscillation is completely oralmost completely damped.

• 社団法人日本物理学会の論文
• 1987-05-15

著者

• Nakajima Noriyoshi

  Institute Of Plasma Physics Nagoya University

関連論文

• Dissipgtive Effects on Stable RFP Configurations
• Nonlinear Phenomena Due to an m=1 Non-Resonant Current-Driven Mode in RFP with Relatively High S Number
• Analytical Studies on the Nonlinear Oscillation Due to an m=1 Non-Resonant Current-Driven Mode in RFP Plasmas

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