Influence of plasma-induced reflected wave variations on microwave transmission characterization of supersonic plasma excited in shock tube  

作　　者：Jing TIAN Ping MA Bo CHEN Haoquan HU Bin ZENG Lutong LI Pu TANG 田径;马平;陈波;胡皓全;曾彬;李路同;唐璞(School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 611731,People's Republic of China;Hypervelocity Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang 621000,People's Republic of China)

机构地区：[1]School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 611731,People's Republic of China [2]Hypervelocity Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang 621000,People's Republic of China

出　　处：《Plasma Science and Technology》2022年第4期177-187,共11页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(Nos.62001095 and U20B2043);the Fundamental Research Funds for the Central Universities of China(No.ZYGX2018KYQD200);the National Science and Technology Major Project of the Ministry of Science and Technology of China(No.SQ2019YFA040012);the National Defense Basic Scientific Research Program of China(No.2020-JCJQ-ZD-072)。

摘　　要：In this work,the theoretical analysis and experiment results investigating the influence of plasma-induced reflected wave variations on microwave transmission characterization are presented.Firstly,an analytical transmission line model for transmission characterization of plasma in shock tube is derived and validated against full-wave simulation.Then,the theoretical analysis of transmission characterization based on a time-dependent reconstruction algorithm that takes into account the variations of reflected wave is presented and the influence of reflection variations under various states of plasma is also investigated.The unusual increase in the amplitude of transmitted wave is theoretically predicted and experimentally demonstrated as well.Finally,the experiment results are also presented to illustrate the effects of reflected wave variations in practical microwave transmission characterization of supersonic plasma excited in shock tube.

关 键 词：PLASMA microwave transmission shock tube 

分 类 号：V443.1[航空宇航科学与技术—飞行器设计]