Tangential imaging for fluctuation studies
Tangential imaging for fluctuation studies
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用于波动研究的切向成像
DOI：
10.1063/1.1141725
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发表时间：
1990
影响因子：
1.6
通讯作者：
G. Renda
中科院分区：
文献类型：
--
作者：
S. Goeler;E. Fredrickson;R. Bell;M. Bitter;B. Grek;K. Hill;H. Hsuan;D. Johnson;D. Long;K. McGuire;R. Parsells;G. Renda
切向成像是一种研究高极向模数为m的不稳定性的方法。由于发射是沿一条视线积分的，传统的垂直观看软X射线二极管阵列无法观察到这些不稳定性。切向成像的计算机模拟表明，该方法可以获得良好的空间分辨率。先决条件是(A)视线在最接近等离子体中心的点上与磁力线几乎平行，以及(B)用于测量的等离子体辐射存在陡峭的梯度。TFTR计划的切向、二维成像、软X射线二极管阵列将被概述。
Tangential imaging is being pursued on TFTR as a method to study instabilities with high poloidal mode number m. These instabilities cannot be seen with conventional perpendicular viewing soft x‐ray diode arrays because the emission is integrated along a line of sight. Computer simulations of tangential imaging indicate that excellent spatial resolution can be obtained. Prerequisites are (a) that the line of sight is nearly parallel to a magnetic field line at the point of closest approach to the center of the plasma, and (b) that there exists a steep gradient of the plasma radiation that is used for the measurements. The TFTR plans for a tangential, two‐dimensional imaging, soft x‐ray diode array will be outlined.