...
首页> 外文期刊>Physical review letters >Dynamics of Nonlinear Coupling between Electron-Temperature-Gradient Mode and Drift-Wave Mode in Linear Magnetized Plasmas
【24h】

Dynamics of Nonlinear Coupling between Electron-Temperature-Gradient Mode and Drift-Wave Mode in Linear Magnetized Plasmas

机译:线性磁化等离子体中电子-温度梯度模式与漂移波模式之间的非线性耦合动力学

获取原文
获取原文并翻译 | 示例
           

摘要

A high-frequency (~0.4 MHz) fluctuation is excited by an electron temperature gradient (ETG) perpendicular to magnetic field lines, which is consistent with an ETG mode. When the fluctuation amplitude of the ETG mode exceeds a certain threshold, the mode gradually becomes saturated and a low-frequency (~7 kHz) fluctuation which is originally caused by a drift wave is enhanced, corresponding to the saturation of the ETG mode. In addition, a nonlinear coupling, specifically, the bicoherence between the ETG mode and the drift wave mode, begins to increase when the ETG strength exceeds the threshold, which simultaneously occurs with the saturation of the ETG mode. Thus, it was determined that the ETG mode stimulates the drift wave mode excitement via multiscale nonlinear interaction between the high-frequency (~MHz) and low-frequency (~kHz) fluctuations, which ultimately causes ETG mode energy to be transferred to the drift wave mode.
机译:垂直于磁场线的电子温度梯度(ETG)激发了高频(〜0.4 MHz)波动,这与ETG模式一致。当ETG模式的波动幅度超过某个阈值时,模式逐渐饱和,并且原本由漂移波引起的低频(〜7 kHz)波动增强,与ETG模式的饱和相对应。另外,当ETG强度超过阈值时,非线性耦合,特别是ETG模式和漂移波模式之间的双相干性开始增加,这与ETG模式的饱和同时发生。因此,可以确定ETG模式是通过高频(〜MHz)和低频(〜kHz)波动之间的多尺度非线性相互作用来激发漂移波模式的兴奋,最终导致ETG模式能量转移到漂移中波浪模式。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号