LIU Feng,LIU Jiang-fan,GONG Chen-rong,et al.Transmission of Terahertz Waves in Plasma Sheath[J].Space Electronic technology,2013,(4):10-12.[doi:10.3969/j.issn.1674-7135.2013.04.003]
太赫茲波在等離子鞘套中的傳播
- Title:
- Transmission of Terahertz Waves in Plasma Sheath
- Keywords:
- Terahertz; SMM; Plasma sheath; Transmittance
- 摘要:
- 介紹了平面波斜入射到不均勻非磁化等離子體時的散射矩陣方法，并用這種方法分析了等離子鞘套中太赫茲信號的傳播特性；計算了鞘套的反射，透射與群時延。計算結果表明，在低碰撞頻率時，鞘套的高通特性顯著，隨著碰撞頻率的增加，鞘套的反射與透射系數隨頻率的變化趨于緩和；總體上等離子體的入射波頻率的增加，有利于電磁波的透射。
- Abstract:
- The scattering matrix method (SMM) is introduced to solve the plane wave incident obliquely to the inhomogeneous unmagnetized plasma. Propagation characteristics of the terahertz signal in the plasma sheath are analyzed by the SMM method. The reflection, transmission and group delay are calculated too. The results show that high-pass characteristic of the sheath is remarkable for low collision frequency. With the increase of collision frequency, the change of the reflection and transmission coefficient of the sheath with frequency is slow. Generally, increasing the incident wave frequency will help the transmission of electromagnetic waves.
參考文獻/References:
[1] Bin-Jie H, Gang W, Sheng-Li L. SMM analysis of reflection, absorption, and transmission from nonuniform magnetized plasma slab[J]. Plasma Science, IEEE Transactions on, 1999,27(4):1131-1136.
[2] Soliman E A, Helaly A, Megahed A A. Propagation of electromagnetic waves in planar bounded plasma region[J]. Progress In Electromagnetics Research, 2007,67:25-37.
[3] 蘇金茲堡著, 錢善譯. 電磁波在等離子體中的傳播[M]. 北京市: 科學出版社, 1978.
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備注/Memo
劉豐 1984年生， 西安空間無線電技術研究所，博士，高級工程師，主要研究方向：太赫茲技術； 劉江凡 1985年生， 西安理工大學，博士，主要研究方向：電磁場數值計算； 宮晨蓉 1990年生， 西安理工大學，碩士研究生，主要研究方向：等離子體中的電波傳播； 席曉莉 1967年生， 西安理工大學，博士，教授，主要研究方向：天線理論與設計，電磁場數值計算等。