浸没在磁化等离子体中的椭圆驰豫等离子体波导中的电磁波传播、场和色散关系的分析与应用

IF 1.6 4区 地球科学 Q3 ASTRONOMY & ASTROPHYSICS Radio Science Pub Date : 2023-11-01 DOI:10.1029/2023RS007815
N. Gholamshahi;A. Abdoli-Arani
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引用次数: 0

摘要

本研究提出并研究了一种椭圆形波导,它的核心是充气等离子体,包覆区是磁化等离子体。包覆区处于恒定的无限磁场中,其方向与波在环形等离子体椭圆波导中的传播方向一致。研究了电磁波在所考虑的波导中的传播。推导出了驰豫等离子体内核和磁化等离子体包层中电磁场分量的表达式。考虑到环形等离子体和磁化等离子体界面的适当边界条件,计算了混合模式的色散关系。对能量通量和频散曲线的行为进行了数值和图形研究。结果表明,功率密度的大小随回旋频率的增加而减小,随等离子体频率的增加而增大。此外,研究还表明,手性参数值越高,后向功率通量越大。
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Analysis and application of the electromagnetic wave propagation, fields, and dispersion relation in an elliptical chiro plasma waveguide immersed in magnetized plasma
This research proposes and investigates an elliptical waveguide filled with chiro plasma as its core and magnetized plasma as its clad region. The clad region is in the constant infinite magnetic field, and its direction is the same as the wave propagation in the chiro plasma elliptical waveguide. The electromagnetic wave propagation in the considered waveguide is studied. The expressions for electromagnetic field components in the chiro plasma core and magnetized plasma cladding are derived. The dispersion relations for the hybrid modes are calculated considering appropriate boundary conditions at the chiro plasma and magnetized plasma interface. The behavior of the energy flux and the dispersion curves are numerically and graphically studied. It is seen that the magnitude of the power density decreases with the increase of the cyclotron frequency and it increases with the increase of the plasma frequency and supports power flow in the backward direction for the considered mode. Furthermore, it is shown higher values of the chirality parameter cause the magnitude of the power flux to increase in the backward direction.
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来源期刊
Radio Science
Radio Science 工程技术-地球化学与地球物理
CiteScore
3.30
自引率
12.50%
发文量
112
审稿时长
1 months
期刊介绍: Radio Science (RDS) publishes original scientific contributions on radio-frequency electromagnetic-propagation and its applications. Contributions covering measurement, modelling, prediction and forecasting techniques pertinent to fields and waves - including antennas, signals and systems, the terrestrial and space environment and radio propagation problems in radio astronomy - are welcome. Contributions may address propagation through, interaction with, and remote sensing of structures, geophysical media, plasmas, and materials, as well as the application of radio frequency electromagnetic techniques to remote sensing of the Earth and other bodies in the solar system.
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