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Dispersion Equation of Low-Frequency Waves Driven by Temperature Anisotropy

文献类型：期刊论文

作者Chen Ling; Wu Dejin
刊名PLASMA SCIENCE & TECHNOLOGY
出版日期2012-10-01
卷号14期号:10页码:880-885
关键词dispersion equation low-frequency waves temperature anisotropy
英文摘要The plasma temperature (or the kinetic pressure) anisotropy is an intrinsic characteristic of a collisionless magnetized plasma. In this paper, based on the two-fluid model, a dispersion equation of low-frequency (omega << omega(ci), omega(ci) the ion gyrofrequency) waves, including the plasma temperature anisotropy effect, is presented. We investigate the properties of low-frequency waves when the parallel temperature exceeds the perpendicular temperature, and especially their dependence on the propagation angle, pressure anisotropy, and energy closures. The results show that both the instable Alfven and slow modes are purely growing. The growth rate of the Alfven wave is not affected by the propagation angle or energy closures, while that of the slow wave depends sensitively on the propagation angle and energy closures as well as pressure anisotropy. The fast wave is always stable. We also show how to elaborate the symbolic calculation of the dispersion equation performed using Mathematica Notebook.
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Physics, Fluids & Plasmas
研究领域[WOS]Physics
关键词[WOS]FIRE-HOSE ; INSTABILITY ; PLASMAS
收录类别SCI
语种英语
WOS记录号WOS:000310547000005
源URL[http://libir.pmo.ac.cn/handle/332002/15536]  
专题紫金山天文台_太阳和太阳系等离子体研究团组
作者单位Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
推荐引用方式
GB/T 7714		 Chen Ling,Wu Dejin. Dispersion Equation of Low-Frequency Waves Driven by Temperature Anisotropy[J]. PLASMA SCIENCE & TECHNOLOGY,2012,14(10):880-885.
APA Chen Ling,&Wu Dejin.(2012).Dispersion Equation of Low-Frequency Waves Driven by Temperature Anisotropy.PLASMA SCIENCE & TECHNOLOGY,14(10),880-885.
MLA Chen Ling,et al."Dispersion Equation of Low-Frequency Waves Driven by Temperature Anisotropy".PLASMA SCIENCE & TECHNOLOGY 14.10(2012):880-885.

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来源：紫金山天文台

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