Theory of electromagnetic fluctuations for magnetized multi-species plasmas
Theory of electromagnetic fluctuations for magnetized multi-species plasmas
复制标题
磁化多物质等离子体的电磁涨落理论
DOI：
10.1063/1.4894700
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发表时间：
2014
影响因子：
2.2
通讯作者：
J. Valdivia
中科院分区：
文献类型：
--
作者：
R. Navarro;J. Araneda;V. Muñoz;P. Moya;A. Viñas;J. Valdivia
等离子体中电磁涨落的分析提供了有关等离子体状态及其宏观性质的信息。特别是，太阳风持续维持一个小的，但可检测的水平的磁波动功率，即使接近热平衡。这些涨落可能与带电粒子的离散性引起的自发电磁涨落有关。在这里，我们推导出的等离子体波动在多物种等离子体的任意分布函数的一般表达式。这种形式主义，概括和包括以前的作品的主题，然后施加到产生电磁波动传播沿着背景磁场中的两个质子人口所描述的漂移双麦克斯韦等离子体。
Analysis of electromagnetic fluctuations in plasma provides relevant information about the plasma state and its macroscopic properties. In particular, the solar wind persistently sustains a small but detectable level of magnetic fluctuation power even near thermal equilibrium. These fluctuations may be related to spontaneous electromagnetic fluctuations arising from the discreteness of charged particles. Here, we derive general expressions for the plasma fluctuations in a multi-species plasma following arbitrary distribution functions. This formalism, which generalizes and includes previous works on the subject, is then applied to the generation of electromagnetic fluctuations propagating along a background magnetic field in a plasma of two proton populations described by drifting bi-Maxwellians.