电磁波在运动介质表面上半波损失的消失现象  

THE DISAPPEARANCE OF HALF WAVE LOSS ON INTERFACE OF MOVING MEDIA FOR ELECTROMAGNETIC WAVE

作　　者：宋仁刚 徐岩 夏乾旭 SONG Rengang;XU Yan;XIA Qianxu(College of Electronic Communication and Physics,Shandong University of Science and Technology,Qingdao Shandong 266590)

机构地区：[1]山东科技大学电子通信与物理学院

出　　处：《物理与工程》2019年第3期113-116,共4页Physics and Engineering

基　　金：国家自然科学基金(11604181、11547037);山东省研究生教育创新计划项目(01040105305)资助课题

摘　　要：本文讨论了考虑相对论效应时电磁波在运动介质表面上半波损失的消失现象。利用相对论四维波矢量的洛伦兹变换关系,导出电磁波在运动介质界面上波矢和频率的关系以及反射波和入射波的振幅比;给出了入射波和反射波的振幅比与入射角度之间的数值关系模拟,并由此讨论沿介质界面运动和垂直于介质界面运动两种方式下反射波的半波损失是否存在。结果发现:在考虑相对论效应的情况下,当介质运动速度接近光速时,电磁波在运动介质界面上的反射不存在半波损失。The problem of the disappearance of half wave loss in the relativistic cases is mainly analyzed in this paper.Making use of the relativistic Lorentz transformation of four-vector,the relation between wave vector and the frequency of electromagnetic plane wave is provided,as well as the amplitude ratio between reflected wave and incident wave.For two different modes of motion,namely the media moving parallel or perpendicular to the interface,the half wave loss was analyzed.The results show that the electromagnetic reflected wave has no half wave loss phenomena in the relativistic cases in which the velocity of moving media approximates to the velocity of light.

关 键 词：相对论 洛伦兹变换 半波损失 

分 类 号：O41[理学—理论物理]