物理学报2012，Vol.61Issue(15)：343-349,7.
等离子体中电磁波传输特性理论与实验研究
Theoretical and experimental studies of electromagnetic wave transmission in plasma
摘要
Abstract
The aircrafts,such as space shuttle,spaceship and so on,are facing the well-known ＂blackout＂ problem when they reentry into the atmosphere.The plasma sheath leads electromagnetic waves to attenuation,and the communications between the aircrafts and the ground to losing,and even completely interrupte,thereby resulting in the loss of radar targets and threatening the lives of the astronauts. Therefore,it is important to study the properties of the electromagnetic wave transmission in plasma.The characteristics of electromagnetic wave transmission in plasma are studied theoretically and experimentally in this paper.The variations of the electromagnetic wave attenuation with plasma density,collision frequency and electromagnetic wave frequency are obtained.The electromagnetic wave attenuation increasean an order of magnitude with plasma density increasing an order of magnitude.The electromagnetic wave attenuation first increases and then decreases with plasma collision frequency increasing,the electromagnetic wave attenuation decreases with the increase of electromagnetic wave frequency.The electromagnetic wave transmission properties in plasma are studied experimentally with shock tube,and the experimental results accord well with the theoretical results.The results show that increasing the electromagnetic wave frequency is an effective way to solve the reentry blackout problem.关键词
等离子体/电磁波传输Key words
plasma/electromagnetic waves transmission分类
数理科学引用本文复制引用
郑灵,赵青,罗先刚,马平,刘述章,黄成,邢晓俊,张春艳,陈旭霖..等离子体中电磁波传输特性理论与实验研究[J].物理学报,2012,61(15):343-349,7.基金项目
国家重点基础研究发展计划（973计划） （）
国际合作项目 （）
国家高技术研究发展计划（863计划） （）
微细加工光学技术国家重点实验室基金（批准号：M160104012011E11）资助的课题 （）
