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首页> 外文期刊>Journal of Experimental and Theoretical Physics >Saturation of Low-Threshold Two-Plasmon Parametric Instability of an Extraordinary Wave in an Inhomogeneous Plasma
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Saturation of Low-Threshold Two-Plasmon Parametric Instability of an Extraordinary Wave in an Inhomogeneous Plasma

机译：非均质等离子体中非寻常波的低阈值两激元参数不稳定性

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摘要

Saturation of low-threshold parametric decay instability of an electron cyclotron wave of extraordinary polarization is analyzed; the development of this instability near a local maximum of the plasma density profile gives rise to two upper hybrid (UH) plasmons at frequencies close to the half of the pump wave frequency. As a saturation mechanism of this instability, a cascade decay of daughter UH waves is used, which leads to the excitation of secondary UH and lower hybrid (LH) waves that are also radially localized in the vicinity of a local maximum and minimum of the plasma density profile, respectively.
机译：分析了超极化电子回旋波的低阈值参量衰减不稳定性;这种不稳定性的产生接近于等离子体密度分布的局部最大值，从而在接近泵浦波频率一半的频率处产生了两个上混合（UH）等离子体激元。作为这种不稳定性的饱和机制，使用了子UH波的级联衰减，这导致了次级UH和下部混合（LH）波的激发，它们也径向地位于等离子体的局部最大值和最小值附近密度分布图。

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