The multi-peak point phenomenon of broadband microwave reflection caused by inhomogeneous plasma

作     者：杨敏 齐凯旋 杨玖文 贾飒 刘浩岩 陈燕扬 李瑾 李小平 Min YANG;Kaixuan QI;Jiuwen YANG;Sa JIA;Haoyan LIU;Yanyang CHEN;Jin LI;Xiaoping LI

作者机构：School of Aerospace Science and TechnologyXidian UniversityXi’an 710071People’s Republic of China Taiyuan Satellite Launch CenterTaiyuan 030173People’s Republic of China Beijing Institute of Nearspace Vehicle’s Systems EngineeringBeijing 100076People’s Republic of China 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2024年第26卷第7期

页      面：1-11页

核心收录：

学科分类：07[理学] 070204[理学-等离子体物理] 0702[理学-物理学] 

主　　题：plasma sheath microwave reflection inhomogeneous plasma 

摘      要：During spacecraft re-entry,the challenge of measuring plasma sheath parameters directly contributes to difficulties in addressing communication *** this work,we have discovered a phenomenon of multiple peaks in reflection data caused by the inhomogeneous *** results show that the multi-peak points fade away as the characteristic frequency is approached,resembling a series of gradually decreasing *** positions and quantities of these points are positively correlated with electron density,yet they show no relation to collision *** phenomenon is of significant reference value for future studies on the spatial distribution of plasmas,particularly for using microwave reflection signals in diagnosing the plasma sheath.