Propagation characteristics of obliquely incident terahertz waves in inhomogeneous microplasma

IF 2 3区 物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS
Lei Zhang, Lingzhao Ji, Yuexing Zhao, Ruiming Su, Guokai Yi, Yuren Shi
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引用次数: 0

Abstract

The transmission characteristics of terahertz (THz) waves in a non-uniform microplasma are investigated by using the scattering matrix method. The electron density distribution in microplasma is simulated by Epstein and parabolic models. The effects of physical parameters, such as the incidence angle of THz waves, microplasma size, electron density, and collision frequency, on the propagation of THz waves are numerically analyzed. The results show that lower frequency THz waves are difficult to penetrate the microplasma with high electron density and high collision frequency. The microplasma density distribution, especially the gradient variation of the density in the first layer, has a large effect on the reflection of THz waves. Thus, THz waves can be used to diagnose the physical parameters of microplasmas.
斜入射太赫兹波在不均匀微等离子体中的传播特性
利用散射矩阵法研究了太赫兹(THz)波在非均匀微等离子体中的传输特性。用 Epstein 和抛物线模型模拟了微等离子体中的电子密度分布。数值分析了太赫兹波入射角、微等离子体尺寸、电子密度和碰撞频率等物理参数对太赫兹波传播的影响。结果表明,较低频率的太赫兹波难以穿透高电子密度和高碰撞频率的微等离子体。微等离子体的密度分布,尤其是第一层密度的梯度变化,对太赫兹波的反射有很大影响。因此,太赫兹波可用来诊断微等离子体的物理参数。
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来源期刊
Physics of Plasmas
Physics of Plasmas 物理-物理:流体与等离子体
CiteScore
4.10
自引率
22.70%
发文量
653
审稿时长
2.5 months
期刊介绍: Physics of Plasmas (PoP), published by AIP Publishing in cooperation with the APS Division of Plasma Physics, is committed to the publication of original research in all areas of experimental and theoretical plasma physics. PoP publishes comprehensive and in-depth review manuscripts covering important areas of study and Special Topics highlighting new and cutting-edge developments in plasma physics. Every year a special issue publishes the invited and review papers from the most recent meeting of the APS Division of Plasma Physics. PoP covers a broad range of important research in this dynamic field, including: -Basic plasma phenomena, waves, instabilities -Nonlinear phenomena, turbulence, transport -Magnetically confined plasmas, heating, confinement -Inertially confined plasmas, high-energy density plasma science, warm dense matter -Ionospheric, solar-system, and astrophysical plasmas -Lasers, particle beams, accelerators, radiation generation -Radiation emission, absorption, and transport -Low-temperature plasmas, plasma applications, plasma sources, sheaths -Dusty plasmas
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