Experiments and Numerical Simulations of Electromagnetic Wave Propagation inPlasma Varying Rapidly in Space and Time

摘要

In this work, the electromagnetic wave propagating in a fast growing plasma isstudied experimentally and numerically. Theoretical models are developed to assist the numerical simulations. The plasma media involved in the study is classified into two categories, (1) the plasma density varies both temporally and spatially; (2) the plasma density is a function of time only. It is shown that the results of the numerical simulations based on the theoretical models agree well with those of the experiments. The agreement validates the developed theoretical models which can be used to guide and understand the future experiments on high power microwave pulse propagation and the future experiments for developing practical plasma devices. This study shows that the spectrum of a microwave will be modified while propagating through a fast growing plasma.