High-Fidelity Optical Transfer System for Two Dimensional Imaging of Density Distribution of a Pure Electron Plasma
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概要
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A simple-structured imaging system is constructed for observing two-dimensional electron density distributions over a wide dynamic range and with a high spatial resolution. It consists of a phosphor plate, an image-transfer lens system and a charge-coupled-device (CCD) camera. The reliable operation of the CCD camera for experiments in a strong magnetic field (${<}2.2$ T) requires positioning the camera at a large distance from the plasma trap. We successfully introduce a three-lens system for transferring the phosphor images to the camera with a low distortion and a high optical efficiency. The luminosity distribution of the CCD camera image is observed to be proportional to the axially integrated two-dimensional distribution of electrons. This proportionality is confirmed over a wide dynamic range of $15:60000$ in the counting at each pixel of the CCD. On the basis of the linear relationship, a quantitative analysis is demonstrated for image data obtained from a vortex experiment encompassing the fluctuation level of 15 in the background and the peak value exceeding 30000 of an electron clump.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-10-15
著者
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Soga Yukihiro
Graduate School Of Human And Environmental Studies Kyoto University
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Kiwamoto Yasuhito
Graduate School Of Human And Environmental Studies Kyoto University
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SANPEI Akio
Graduate School of Human and Environmental Studies, Kyoto University
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Aoki Jun
Graduate School Of Human And Environmental Studies Kyoto University
関連論文
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- Equilibrium Density Distribution of a Two-Species Plasma with a Single Sign of Charge(Gases, Plasmas and Electric Discharges)
- Equilibrium Density Distribution of a Two-Species Plasma with a Single Sign of Charge
- Novel Application of Electron Vortex Dynamics to the Alignment of Magnetic and Cylinder Axes
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- Novel Application of Electron Vortex Dynamics to the Alignment of Magnetic and Cylinder Axes
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- Deformation of Weakly Unstable Density Distribution of Non-Neutral Plasma Stimulated by Resonant Clumps
- Field Analysis of Two-Dimensional Dynamics of Non-neutral Plasma by Imaging Diagnostics and Examination by Sector Probing
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