• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Plasma physics and controlled fusion >Return current instability driven by a temperature gradient in ICF plasmas
【24h】

Return current instability driven by a temperature gradient in ICF plasmas

机译：在ICF等离子体中通过温度梯度驱动的电流不稳定

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Hot plasmas with strong temperature gradients in inertial confinement fusion experiments are examined for ion acoustic instabilities produced by electron heat flow. The return current instability (RCI) due to a neutralizing current of cold electrons arising in response to a large electron heat flux has been considered. First, the linear threshold and growth rates are derived in the non-local regime of thermal transport. They are compared with the results of Vlasov-Fokker- Planck (VFP) simulations in one spatial dimension. Very good agreement has been found between kinetic VFP simulations and the linear theory of the RCI. A quasi-stationary state of ion acoustic turbulence (IAT) produced by the RCI is achieved in the VFP simulations. Saturation of the RCI involves heating of ions in the tail of the ion distribution function and convection of the enhanced ion acoustic fluctuations from the unstable region of the plasma.
机译：研究了惯性约束聚变实验中具有强温度梯度的热等离子体中电子热流产生的离子声不稳定性。考虑了由于大电子热流引起的冷电子中和电流引起的返回电流不稳定性（RCI）。首先，推导了非局部热输运条件下的线性阈值和增长率。并将其与Vlasov-Fokker-Planck（VFP）一维模拟结果进行了比较。在动力学VFP模拟和RCI的线性理论之间已经发现了非常好的一致性。在VFP模拟中，实现了由RCI产生的离子声湍流（IAT）的准稳态。RCI的饱和包括离子分布函数尾部离子的加热和等离子体不稳定区域增强的离子声涨落的对流。

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