Proton-Alpha Drift Instability of Electromagnetic Ion-Cyclotron Modes: Quasilinear Development
Proton-Alpha Drift Instability of Electromagnetic Ion-Cyclotron Modes: Quasilinear Development
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DOI：
10.3390/physics3040075
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发表时间：
2021-12
期刊：
影响因子：
1.6
通讯作者：
S. M. Shaaban;M. Lazar;P. Yoon;S. Poedts;R. A. López
中科院分区：
文献类型：
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作者：
S. M. Shaaban;M. Lazar;P. Yoon;S. Poedts;R. A. López
空间等离子体通过涉及自生波动的机制进行自我调节的能力是一个令人高度感兴趣的课题。本文介绍了一种新的先进的准线性（QL）方法的结果，在太阳风中观测到的相对α质子漂移驱动的电磁离子回旋模式的不稳定性。对于扩展的参数分析，本QL方法还包括这些人口的固有各向异性温度的影响。增强的波动有助于质子和α粒子之间的能量交换，导致各向异性，质子-α漂移和温度对比度的重要变化。这里提出的结果可以帮助理解观测数据，特别是那些揭示与质子和α粒子的性质相关的局部变化以及膨胀太阳风的空间分布的数据。
The ability of space plasmas to self-regulate through mechanisms involving self-generated fluctuations is a topic of high interest. This paper presents the results of a new advanced quasilinear (QL) approach for the instability of electromagnetic ion-cyclotron modes driven by the relative alpha-proton drift observed in solar wind. For an extended parametric analysis, the present QL approach includes also the effects of intrinsic anisotropic temperatures of these populations. The enhanced fluctuations contribute to an exchange of energy between proton and alpha particles, leading to important variations of the anisotropies, the proton-alpha drift and the temperature contrast. The results presented here can help understand the observational data, in particular, those revealing the local variations associated with the properties of protons and alpha particles as well as the spatial profiles in the expanding solar wind.