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本文基于三波共振相互作用,研究了低杂波驱动的高频电磁辐射。Vlasov方程的导向中心形式被用来推导包括动力效应的耦合系数。在小kz近似下,给出了耦合系数中的所有速度积分。对一般非线性色散关系进行了详细理论分析,结果表明:(1)低杂泵浦波可以激发电子Bernstein波,并伴随高频电磁辐射;(2)以这种方式激发的电磁辐射是一种热电子回旋辐射,辐射强度随着等离子体温度和密度的增加而增加。这样我们可以假定,本非线性不稳定性可以成为低杂波驱动中增强电子回旋辐射及等离子体电子回旋辐射的起因。
Based on the three-wave resonance interaction, this paper studies the low-frequency-driven high-frequency electromagnetic radiation. The guidance center form of the Vlasov equation is used to derive the coupling coefficient including the dynamic effect. In the small kz approximation, all the velocity integrals in the coupling coefficient are given. The detailed theoretical analysis on the general nonlinear dispersion relationship shows that: (1) Low miscellaneous pump waves can excite electron Bernstein waves with high frequency electromagnetic radiation; (2) Electromagnetic radiation excited in this way is a Hot electron cyclotron radiation, radiation intensity increases with increasing plasma temperature and density. Thus we can assume that this nonlinear instability can be the cause of enhanced electron cyclotron radiation and plasma electron cyclotron radiation in low clutter-driven.