平行于磁场传播的色散等离子体波的三波相互作用
Three-wave interactions of dispersive plasma waves propagating parallel to the magnetic field
摘要：
研究了等离子体波在电子回旋频率以下平行于平均磁场传播时的三波相互作用。我们考虑阿尔文-离子回旋波，快磁声-哨声波，和离子声波。特别是弱湍流低β等离子体，如太阳日冕，冷等离子体色散关系的横波和流体描述的热等离子体的纵波。我们分析了波频率$ω$和波数$k$的共振条件，以及三种波模式的所有可能组合的波的相互作用速率，并列出了那些不被禁止的反应。
英文摘要：
Three-wave interactions of plasma waves propagating parallel to the mean magnetic field at frequencies below the electron cyclotron frequency are considered. We consider Alfvén--ion-cyclotron waves, fast-magnetosonic--whistler waves, and ion-sound waves. Especially the weakly turbulent low-beta plasmas like the solar corona are studied, using the cold-plasma dispersion relation for the transverse waves and the fluid-description of the warm plasma for the longitudinal waves. We analyse the resonance conditions for the wave frequencies $ω$ and wavenumbers $k$, and the interaction rates of the waves for all possible combinations of the three wave modes, and list those reactions that are not forbidden.
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