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The effect of toroidal plasma rotation on low-frequency reversed shear Alfvén eigenmodes in tokamaks

机译:环形等离子体旋转对托卡马克中低频反向剪切Alfvén本征模的影响

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摘要

The influence of toroidal plasma rotation on the existence of reversed shear Alfvén eigenmodes (RSAEs) near their minimum frequency is investigated analytically. An existence condition is derived showing that a radially decreasing kinetic energy density is unfavourable for the existence of RSAEs. The Coriolis effect is typically unfavourable for modes moving slower than the plasma or moving in the opposite direction. The generality of the analysis allows for the description of downwards sweeping RSAEs and also rotation-induced modes in regular shear plasmas.
机译:通过分析研究了环形等离子体旋转对其在最小频率附近的反向剪切Alfvén本征模(RSAE)的存在的影响。得出存在条件,表明径向减小的动能密度不利于RSAE的存在。科里奥利效应通常不适用于比等离子移动慢或沿相反方向移动的模式。分析的一般性允许描述向下剪切的RSAE,以及常规剪切等离子体中的旋转诱导模式。

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