Analysis and Optimization of Microwave Transmission in a Magnetized Plasma-Metal Model

The problem of interaction of microwaves with magnetized plasma is complicated and has garnered considerable interest in recent decades. It has been shown that the parameters, such as magnetic field intensity, plasma density, collision frequency, and plasma size, have substantial impacts on microwave propagation in magnetized plasma. The influences of one of the magnetized plasma parameters on the propagation can be studied easily; however, plasma must be considered integrally as it is an electrically neutral medium. In this paper, using a designed magnetized plasma-metal model, we assess how magnetized plasma parameters influence the interaction of microwaves in magnetized plasma in order to reveal a non-monotonic and complex relationship. We numerically investigate the reflection of fixed-frequency and broadband microwaves using the bounded magnetized plasma-metal model. And the optimized plasma parameters, such as plasma frequency, and collision frequency can be given automatically. By optimizing the reflection of fixed-frequency and broadband microwaves, optimized plasma parameters can be obtained. The relationship between microwave reflections and plasma parameters are depicted visually via figures. Finally, we discuss the degree of influence of plasma parameters on the microwave reflection. By parameter optimization, we obtain plasma parameters for plasma device design that meets the requirements of microwave propagation in magnetized plasma. These results may be useful in applications of electromagnetic wave propagation in magnetized plasma.