摘要
The transmission characteristics of electromagnetic wave (EM-waves) in discharge plasma have been investigated theoretically and experimentally. A model was developed to calculate the reflection, absorption and transmission of the EM-waves with a perpendicular incidence angle to the uniform non-magnetized plasma as a function of the plasma frequency at different collision frequencies. The attenuation of EM-waves after passing the discharge plasma at different pressures was also measured experimentally. It is shown that the dense plasma produced by the glow discharge at pressure of 25~600Pa in argon can attenuate the 9.1GHz EM-wave by 17dB. The discharge plasma is feasible to block the EM waves of X-band efficiently and to be used in EM shielding.
| 源语言 | 英语 |
|---|---|
| 页（从-至） | 43-45 |
| 页数 | 3 |
| 期刊 | Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology |
| 卷 | 29 |
| 期 | SUPPL. 2 |
| 出版状态 | 已出版 - 8月 2009 |