Fluctuation-induced dynamo effect in a magnetic confinement plasma
PHYSICAL REVIEW RESEARCH(2023)
摘要
The electron temperature fluctuation-induced dynamo electric field has been measured in the core of high -temperature EAST tokamak plasmas by Faraday-effect polarimetry and electron cyclotron emission. It is found that a dynamo electric field primarily arises from the coherent interaction between radial magnetic-field fluctu-ations and electron temperature fluctuations associated with the internal kink instability, acting to self-regulate the current profile to prevent sawtooth magnetic reconnection.
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关键词
magnetic confinement plasma,dynamo effect,fluctuation-induced
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