Field Analysis of Two-Dimensional Dynamics of Non-neutral Plasma by Imaging Diagnostics and Examination by Sector Probing
Field Analysis of Two-Dimensional Dynamics of Non-neutral Plasma by Imaging Diagnostics and Examination by Sector Probing
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通过成像诊断和扇形探测检查对非中性等离子体二维动力学进行现场分析
DOI：
10.1143/jjap.40.2558
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发表时间：
2001
影响因子：
1.5
通讯作者：
A. Sanpei
中科院分区：
文献类型：
--
作者：
K. Ito;Y. Kiwamoto;A. Sanpei
电荷耦合器件（CCD）相机图像的亮度对荧光屏上的电子通量分布的线性响应被证明为非中性等离子体动力学的二维（2D）分析的基础。我们提出了一个快速和足够准确的程序来构建从所观察到的二维图像的电位和电场分布。这种场分析对于深入广泛地研究涡旋动力学或湍流是必不可少的。使用这个过程中，我们定量比较扇区探测的图像诊断的第一次表明，核心动态，这是观察清楚的成像是严重模糊的探测，因此，它的应用应限于简单的动力学的一小部分离散分布的粒子。
The linear response of the luminosity of the charge-coupled-device (CCD) camera image to the electron-flux distribution on the phosphor screen is demonstrated as the basis of two dimensional (2D) analyses of non-neutral plasma dynamics. We present a fast and sufficiently accurate procedure to construct the potential and the electric field distribution from the observed 2D images. Such field analyses are essential for deep and extensive studies of vortex dynamics or turbulence. Using this procedure, we quantitatively compare the image diagnostics by sector probing for the first time to show that core dynamics which is observed clearly by imaging is severely obscured by probing; thus, its application should be limited to simple dynamics of a small number of discrete distributions of particles.