物理学报Issue(5)：1-7,7.DOI:10.7498/aps.64.055201
电磁波在非磁化等离子体中衰减效应的实验研究∗
Exp erimental investigation on attenuation effects of electromagnetic waves in an unmagnetized plasma
摘要
Abstract
Plasma stealth technology has many unique advantages, hence it has a promising application in the aviation and aerospace fields. The attenuation characteristics of vertical incidence of electromagnetic waves into unmagnetized plas-mas with metal underlay are studied theoretically and experimentally in this paper. Regulations for the change of electromagnetic wave attenuation with plasma parameters are analyzed in theory using WKB method. A-large-area plasma slab is generated stably by inductively coupled discharge, and the reflectivity arch test system of plasma slab is set up. While the attenuation effects of electromagnetic wave in unmagnetized plasmas are studied experimentally. The electron density of plasma generated at different discharge powers is obtained by using the microwave phase and plasma spectrum diagnostic technique, ranging from 8.17×109 to 7.61×1010 cm−3. The plasma generated by inductively coupled plasma (ICP) has an effect on the attenuation of electromagnetic waves, and the experimental results accord well with the theoretical ones. Results show that increasing the plasma electron density and covering homogeneity can contribute to improving the attenuation effect of plasma on electromagnetic waves.关键词
等离子体隐身/ICP放电/电磁波衰减/电子密度Key words
plasma stealth/ICP discharge/electromagnetic wave attenuation/electron density引用本文复制引用
林敏,徐浩军,魏小龙,梁华,张艳华..电磁波在非磁化等离子体中衰减效应的实验研究∗[J].物理学报,2015,(5):1-7,7.基金项目
国家自然科学基金(批准号:51276197)资助的课题.@@@@* Project supported by the National Natural Science Foundation of China (Grant No.51276197) （批准号:51276197）
