Electron Density Measurememt by Microwave Scattering from Underdense Cylindrical Plasmas
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概要
- 論文の詳細を見る
From Midzuno's scattering theory in the Born approximation, formulas are derived for the phase shift of coherent microwaves caused by cylindrical plasmas. Experiments are made on helium plasmas of 17 to 96mm diameter at 34GC and on a 45mm diameter plasma at 9GC with standard type micro-wave interferometers to examine the applicability of the formulas. Agreement between the values of phase shif tpredicted by theory and those obtained by experiment is remarkably good when judged from the calibration by Langmuir probe. By the use of the derived formulas, a new method of analysis is proposed for measuring the electron density of underdense cylindrical plasmas for which the phase shift analysis based on the plane slab approximation may not simply be applied. It is found by experiment that the effect of glass wall of the discharge tube on the phase shift is only to shift he point of balance of the interferometer bridge.
- 社団法人日本物理学会の論文
- 1966-07-05
著者
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SHIOBARA Shinji
Thermonuclear Fusion Laboratory, The Institute of Physical and Chemical Research
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Shiobara Shinji
Thermonuclear Fusion Laboratory The Institute Of Physical And Cemical Research
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Shiobara S.
Thermonuclear Fusion Laboratory, The Institute of Physical and Chemical Research
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Shiobara S.
Thermonuclear Fusion Laboratory, The Institute of Physical and Cemical Research
関連論文
- Microwave Free Space Method with Lens Antennas for Plasma Diagnostics
- Application of Microwave Scattering Theory to Measurement of Underdense Cylindrical Plasmas
- Electron Density Measurememt by Microwave Scattering from Underdense Cylindrical Plasmas
- Measurement of Low Electron Density Plasma by the Microwave Free Space Method