Microwave Probe for Measuring Extremely High Electron Densities in Plasmas

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概要

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• A microwave prove is proposed, which consists of a waveguide terminated by a dielectric window. The probe is applicable to plasmas whose plasma frequencies are higher than the applied microwave frequency. The principle is based on the measurement of the phase angle of the reflection coefficient at the terminal which is inserted into plasmas. A preliminary experiment with a plasma-simulator shows that the maximum electron density detectable with this probe operating at an X-band frequency of 9550 Mc reaches to 10<SUP>17</SUP>cm<SUP>-3</SUP>, when the dielectric window is used of specific permittivity of ε≅3 and of thickness equal to a quater wavelength. A coaxial-probe is also proposed.

• 社団法人 プラズマ・核融合学会の論文

著者

• Tsukishima Takashige

  Nagoya University

• Takeda S.

  Nagoya University, Nagoya Japan University of Illinois

関連論文

• Microwave Reflection by Magneto-Plasmas
• Microwave Study of Plasmas Produced by Electromagnetically Driven Shock Waves
• Microwave Conductivity in a Turbulent Plasam with a Magnetic Field
• A Metod for Measuring High Electron Densities in Plasmas
• Microwave Reflection Measurement of Extremely High Electron Densities of Plasmas Produced by Shock Waves
• Microwave Probe for Measuring Extremely High Electron Densities in Plasmas

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