Abstract:

Measurement of HAradial distribution is an important part in a plasma experiment. During the HL-2A experiment, CCD photos recorded the plasma radiation informat ion using a plasma imaging system, part icularly the HA line emission information (with HA filter in front of the camera) . Since the line of light radiation measurement involves a line integral of the radiat ing region, data handling and analysis are necessary. The HA radial distribution along an HL-2A tokamak radial radius can be obtained by using an Abel inversion transformation with plasma imaging on the HL-2A tokamak. This paper provides a reliable measurement method on the HL-2A tokamak.

Key words: Abel inversion transformation, Wiener filter, CCD imaging

摘要：

等离子体H_α 径向分布的测量是等离子体实验中的重要内容。在HL- 2A 实验中, 等离子体成像系统中的CCD 图片记录了等离子体辐射信息, 特别是H_α  线辐射信息( 在相机前加H_α 滤光片) 。因为光测量是辐射的线积分, 数据的处理和分析显得十分必要的。利用等离子体可见光成像系统, 采用Abel 变换, 得到H_α  在HL- 2A 装置中的径向分布, 提供了一项可靠的测量手段。

关键词: Abel 变换, Wiener 滤波, CCD 成像