Nonlinear Energy Cascading in Turbulence during the Internal Reconnection Event at the Sino-United Spherical Tokamak

Song Chai; Yu-Hong Xu; Zhe Gao; Wen-Hao Wang; Yang-Qing Liu; Yi Tan

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Nonlinear Energy Cascading in Turbulence during the Internal Reconnection Event at the Sino-United Spherical Tokamak

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摘要

The characteristics of the energy transfer and nonlinear coupling among edge electromagnetic turbulence in thermal quench sub-period of the internal reconnection event (IRE) are studied at the sino-united spherical tokamak device using multiple Langmuir and magnetic probe arrays.The wavelet bispectral analysis and the modified Kim method are applied to investigate linear growth/damping and nonlinear energy transfer rates,along with multi-field turbulence interactions.The results show a multi-field nonlinear energy transfer from electrostatic to magnetic turbulence that results in two-mode coupling in magnetic turbulence,which may play a crucial role to trigger the IRE.

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《中国物理快报：英文版》 |2017年第2期|56-59|共4页
作者
Song Chai; Yu-Hong Xu; Zhe Gao; Wen-Hao Wang; Yang-Qing Liu; Yi Tan;
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Department of Engineering Physics, Tsinghua University, Beijing 100084;

Southwestern Institute of Physics, Chengdu 610041;

Department of Engineering Physics, Tsinghua University, Beijing 100084;

Department of Engineering Physics, Tsinghua University, Beijing 100084;

Department of Engineering Physics, Tsinghua University, Beijing 100084;

Department of Engineering Physics, Tsinghua University, Beijing 100084;

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Nonlinear Energy Cascading in Turbulence during the Internal Reconnection Event at the Sino-United Spherical Tokamak

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