Transmission characteristics of microwave in a glow-discharge dusty plasma

Journal Article · Fri Jul 15 04:00:00 EDT 2016 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4958641· OSTI ID:22600033

Jia, Jieshu; Yuan, Chengxun; Gao, Ruilin; Wang, Ying; Zhou, Zhong-Xiang ^[1]; Liu, Sha; Yue, Feng ^[2]; Wu, Jian ^[3]; Li, Hui ^[1]

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1. Department of Physics, Harbin Institute of Technology, Harbin 150001 (China)
2. Shanghai Institute of Spaceflight Control Technology, Shanghai 200233 (China)
3. China Research Institute of Radio wave Propagation, Qingdao 102206 (China)

In this study, the propagation characteristics of electromagnetic wave in a glow discharge plasma with dust particles are experimentally investigated. A helium alternating current glow discharge plasmas have been successfully generated. Measurements of the plasma parameters using Langmuir probes, in the absence of dust particles, provide plasma densities (n{sub e}) of 10{sup 17 }m{sup −3} and electron temperatures (T{sub e}) ranging from 2 to 4 eV. Dusty plasmas are made by adding 30 nm radius aluminum oxide (Al{sub 2}O{sub 3}) particles into the helium plasma. The density of the dust particle (n{sub d}) in the device is about 10{sup 11}–10{sup 12 }m{sup −3}. The propagation characteristics of electromagnetic waves are determined by a vector network analyzer with 4–6 GHz antennas. An apparent attenuation by the dust is observed, and the measured attenuation data are approximately in accordance with the theoretical calculations. The effects of gas pressure and input power on the propagation are also investigated. Results show that the transmission attenuation increases with the gas pressure and input power, the charged dust particles play a significant role in the microwave attenuation.

• OSTI ID: 22600033
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 7 Vol. 23; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALTERNATING CURRENT
ALUMINIUM OXIDES
ANTENNAS
ATTENUATION
DUSTS
ELECTRON TEMPERATURE
ELECTRONS
GHZ RANGE 01-100
GLOW DISCHARGES
HELIUM
LANGMUIR PROBE
MICROWAVE RADIATION
PARTICLES
PLASMA
PLASMA DENSITY
TRANSMISSION
VECTORS