Marginal stability of whistler-mode waves in plasma with multiple electron populations
Marginal stability of whistler-mode waves in plasma with multiple electron populations
复制标题
多电子群体等离子体中哨声模式波的边际稳定性
作者：
V. Frantsuzov;A. Artemyev;P. Shustov;X.‐J. Zhang
惠斯勒模式波是行星磁层中最强烈的电磁波之一。这些波使高能电子损失到大气中，并使电子加速到相对论能量。哨子波的产生通常归因于热电子的各向异性。对于单组分麦克斯韦等离子体，口哨模式波的边际稳定性对应的各向异性已经推导出来，但是这个标准在地球磁层中并不总是有效，因为口哨模式波是由能量受限的、强各向异性的电子种群产生的。本研究旨在推广具有小而强各向异性电子居群的多组分等离子体的边际稳定性方程。通过线性分析，导出了新的边缘稳定性解析方程。我们还讨论了推导出的方程对地球磁层中不同电子居群的适用性。
Whistler-mode waves are one of the most intense electromagnetic waves in the planetary magnetospheres. These waves are responsible for energetic electron losses into the atmosphere and for electron acceleration up to relativistic energies. Generation of whistler-mode waves is typically attributed to the thermal electron anisotropy. The anisotropy corresponding to the marginal stability for whistler-mode waves has been derived for a single-component Maxwellian plasma, but this criterion does not always work in the Earth's magnetosphere where whistler-mode waves are generated by an energy-confined, strongly anisotropic electron population. This study aims to generalize the marginal stability equation for multi-component plasma with a small, but strongly anisotropic, electron population. New analytical equations for the marginal stability have been derived from the linear analysis. We have also discussed applicability of the derived equations for different electron populations in the Earth's magnetosphere.
太阳风中超热斯特拉尔电子的稳定性
影响因子：
4.8
作者：
Schroeder, J M;Boldyrev, S;Astfalk, P
通讯作者：
Astfalk, P
惠斯勒热通量不稳定性的非线性演化
DOI：
10.3847/1538-4357/ab3290
发表时间：
2019
期刊：
The Astrophysical Journal
影响因子：
--
作者：
Kuzichev, Ilya V.;Vasko, Ivan Y.;Soto-Chavez, Angel Rualdo;Tong, Yuguang;Artemyev, Anton V.;Bale, Stuart D.;Spitkovsky, Anatoly
通讯作者：
Spitkovsky, Anatoly