Reflection of Electromagnetic Waves by a Nonuniform Plasma Layer Covering a Metal Surface
GAO Hong-Mei, FA Peng-Ting
State Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, School of Physics and Optoelectronic Technology, College of Advanced Science and Technology, Dalian University of Technology, Dalian 116024
Reflection of Electromagnetic Waves by a Nonuniform Plasma Layer Covering a Metal Surface
GAO Hong-Mei, FA Peng-Ting
State Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, School of Physics and Optoelectronic Technology, College of Advanced Science and Technology, Dalian University of Technology, Dalian 116024
Reflection coefficients of electromagnetic waves in a nonuniform plasma layer with electrons, positive ions and negative ions, covering a metal surface are investigated by using the finite-difference-time-domain method. It is shown that the reflection coefficients are influenced greatly by the density gradient on the layer edge, layer thickness and electron proportion, i.e., the effect of the negative ions. It is also found that low reflection or high attenuation can be reached by properly choosing high electron proportion, thick plasma layer, and smooth density gradient in the low frequency regime, but sharp density gradient in the high frequency regime.
Reflection coefficients of electromagnetic waves in a nonuniform plasma layer with electrons, positive ions and negative ions, covering a metal surface are investigated by using the finite-difference-time-domain method. It is shown that the reflection coefficients are influenced greatly by the density gradient on the layer edge, layer thickness and electron proportion, i.e., the effect of the negative ions. It is also found that low reflection or high attenuation can be reached by properly choosing high electron proportion, thick plasma layer, and smooth density gradient in the low frequency regime, but sharp density gradient in the high frequency regime.
(Electromagnetic (nonlaser) radiation interactions with plasma)
引用本文:
GAO Hong-Mei;FA Peng-Ting. Reflection of Electromagnetic Waves by a Nonuniform Plasma Layer Covering a Metal Surface[J]. 中国物理快报, 2008, 25(7): 2562-2565.
GAO Hong-Mei, FA Peng-Ting. Reflection of Electromagnetic Waves by a Nonuniform Plasma Layer Covering a Metal Surface. Chin. Phys. Lett., 2008, 25(7): 2562-2565.