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外部磁场与氩气流对等离子体天线辐射性能影响研究
徐姿,龚学余,杜丹,陈文波
0
(南华大学 电气工程学院;南华大学 电气工程学院、南华大学 核科学技术学院;南华大学 数理学院)
摘要:
本文建立了等离子体天线的二维轴对称模型, 利用有限元法分析研究了低气压条件下氩气流和外部磁场对等离子体天线辐射性能的影响.本文通过改变外部磁场强度和氩气流速等条件, 引起等离子体天线内部电子密度等物理参量的空间分布变化, 并分析讨论空间分布变化产生的原因及其对天线辐射性能的影响. 研究结果表明通过控制外部磁场强度、 氩气流的大小可在一定程度上改善等离子天线的辐射性能.
关键词:  等离子体天线  外部磁场  氩气流  天线辐射
DOI:
基金项目:
Influenceof External Magnetic Fieldand Argon Flow on Radiation Characteristics of Plasma Antenna
XU Zi,GONG Xueyu,DU Dan,CHEN Wenbo
(School Of Electrical Engineering , University Of South China;School Of Electrical Engineering , University Of South China 、School of Nuclear Science and Technology , University of South China;School of Mathematics and Physics , University of South China)
Abstract:
In this paper, a two-dimensional axisymmetric model of plasma antenna is established. The influence of argon gas flow and external magnetic field on the radiation characteristics of plasma antenna under low pressure are studied by finite element method. In this paper, the spatial distribution of physical parameters such as the electron density inside the plasma antenna is changed by changing the conditions of the external magnetic field and the flow rate of the argon gas. The reasons for the spatial distribution change and its influence on the radiation performance of the antenna are analyzed and discussed. The results show that by controlling the strength of the external magnetic field, the size of the argon flow can improve the radiation performance of the plasma antenna to a certain extent.
Key words:  Plasma Antenna  External magneticfield  Argonflow  Antenna Radiatio

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