Two‐dimensional hybrid model of wave and beam heating of multi‐ion solar wind plasma
Two‐dimensional hybrid model of wave and beam heating of multi‐ion solar wind plasma
复制标题
多离子太阳风等离子体波束加热二维混合模型
DOI：
10.1029/2006ja012187
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发表时间：
2007
影响因子：
--
通讯作者：
A. Viñas
中科院分区：
文献类型：
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作者：
L. Ofman;A. Viñas
[1]利用二维混合模型研究了太阳风中质子和重离子的加热和加速，以及重离子对波结构的非线性影响。质子和重离子的动力学处理，通过解决他们的运动方程中的自洽的电场和磁场的波，而电子被视为一个中和背景流体。我们使用的2-D混合代码调查更现实的2-D等离子体模型比以前的1-D模拟和分析研究，它允许平行以及倾斜传播波和本地化的驱动程序。使用混合代码，我们认为第一次的加热和加速的质子和重离子的驱动输入光谱的阿尔芬/回旋波和重离子束在多物种的日冕等离子体在两个空间维度。我们发现，在我们的模型中，离子束是更有效地产生温度各向异性比驱动波谱。我们讨论了观测结果的太阳风的含义。
[1] We study the heating and the acceleration of protons and heavy ions by waves in the solar wind, as well as the nonlinear influence of heavy ions on the wave structure, using a two-dimensional (2-D) hybrid model. Protons and heavy ions are treated kinetically by solving their equations of motion in the self-consistent electric and magnetic fields of the waves, while electrons are treated as a neutralizing background fluid. We use the 2-D hybrid code to investigate more realistic 2-D plasma model than previous 1-D simulation and analytical studies, which allows parallel as well as obliquely propagating waves and localized driver. Using the hybrid code, we consider for the first time the heating and acceleration of protons and heavy ions by a driven-input spectrum of Alfven/cyclotron waves and by heavy ion beam in the multispecies coronal plasma in two spatial dimensions. We find that the ion beam is more efficient in generating temperature anisotropy than the driven wave spectrum in our model. We discuss the observational implication of the results to the solar wind.