III: Theoretical and Simulation Studies of Stimulated Radiation During Ionospheric Heating

PI将通过理论和数值模拟模型对电离层受激电磁发射（SEE）的定量理解做出贡献。SEE是电离层修饰实验中产生的非线性过程的强大诊断工具，也可用于等离子体中的一般非线性过程。这项研究利用了过去研究中未使用的磁化动力学数值模型，但这对进一步研究SEE至关重要。具体而言，PI将：(1)对SEE光谱中产生下移边带的三波参数衰减过程进行更全面的研究；(2)研究在SEE光谱中产生明显上移边带特征的四波衰减过程；(3)研究SEE光谱中的宽带连续谱特征，该特征被认为是背景等离子体中强烈湍流相互作用的结果。

The PI will contribute to quantitative understanding of ionospheric stimulated electromagnetic emission (SEE) through theoretical and numerical simulation models. SEE is a powerful diagnostic tool for nonlinear processes produced during ionospheric modification experiments, and may also be used for general nonlinear processes in plasmas. This investigation utilizes magnetized, kinetic numerical models not used in past investigations, but essential for further progress in studying SEE. Specifically, the PI will: (1) provide a more comprehensive study of three-wave parametric decay processes proposed to produce downshifted sidebands in the SEE spectrum; (2) study four-wave decay processes proposed to produce prominent upshifted sideband features in the SEE spectrum; and (3) study the broadband continuum feature in the SEE spectrum, proposed to result from strongly turbulent interactions in the background plasmas.