Kinetic modeling of stimulated electromagnetic emissions during ionospheric heating experiment
Kinetic modeling of stimulated electromagnetic emissions during ionospheric heating experiment
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DOI：
10.1109/isape.2018.8634190
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发表时间：
2018-12
期刊：
影响因子：
--
通讯作者：
H. Fu;W. Scales
中科院分区：
文献类型：
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作者：
H. Fu;W. Scales
由高功率电磁波注入电离层等离子体引起的受激电磁辐射（SEE）提供了共振区非线性波粒相互作用的直接参数反演和评估。宽上移最大值（BUM）是电离层受激电磁辐射中最显著的谱线，它与人工电离层有关。一个参数化的过程负责的BUM的产生进行了研究，通过二维静电粒子在细胞模拟。初步结果表明，在四阶电子回旋谐波附近，模拟的BUM辐射频谱与实验观测相一致。为了开发可靠的SEE传感技术，该模型提供了一个强大的工具，用于调查受激电磁辐射和相关的等离子体参数。
Stimulated electromagnetic emissions (SEEs) induced by high power electromagnetic waves injected into ionospheric plasmas provide direct parameter retrieval and assessment of nonlinear wave-particle interaction in the resonance regime. The broad upshifted maximum (BUM) is the most prominent spectral line in ionospheric stimulated electromagnetic radiation, which is associated with artificial ionization layers. A parametric process responsible for the generation of the BUM is investigated by two-dimensional electrostatic particle-in-cell simulations. Preliminary results show that simulated frequency spectra of the BUM emission agrees with experimental observations near the fourth electron gyroharmonic $4f_{\text{ce}}$. Towards developing reliable SEE sensing techniques, this model provides a powerful tool for investigating stimulated electromagnetic emissions and associated plasma parameters.