...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Ion-acoustic enhancements generated by beam-plasma instability in an auroral cavity
【24h】

Ion-acoustic enhancements generated by beam-plasma instability in an auroral cavity

机译：束等离子产生的离子声波增强在一次极光腔不稳定

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

This article demonstrates the generation of enhanced ion-acoustic waves by beam-plasma instability in a density cavity. The self-consistent equations of weak turbulence theory that include quasi-linear, decay, and scattering processes as well as convective and dispersive effects are numerically solved for a one-dimensional density cavity. It is shown that significant enhancements of ion-acoustic waves occur in the presence of counterstreaming electron beams and that the enhanced ion-acoustic waves are initially localized near the center of the density cavity at large wavelengths. Later in the evolution, the enhancement in the spectrum of ion-acoustic waves spreads out toward the edges of the cavity, with a shift to smaller wavelengths, while the enhancement near the center of the cavity tends to decrease in magnitude. The significance of the present findings is discussed.
机译：这篇文章展示了一代束等离子增强离子声波的波不稳定在一个密度腔。自洽方程弱湍流理论,包括准线性衰减以及对流和散射过程色散效应数值解一维密度腔。显著增强离子声波的波发生在逆流的存在电子束,增强离子声波波最初是本地化的中心附近密度大波长的谐振腔。进化,光谱的增强离子声波的波向边缘扩散腔,转向更小波长,而附近的增强腔的中心往往会下降大小。结果进行了讨论。

著录项

相似文献

  • 外文文献
  • 中文文献
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