Paul M C, Scime E E
Department of Physics and Astronomy and Center for KINETIC Plasma Physics, West Virginia University, Morgantown, West Virginia 26506, USA.
Rev Sci Instrum. 2021 Apr 1;92(4):043532. doi: 10.1063/5.0043499.
We present planar, laser induced fluorescence (PLIF) measurements of the velocity-resolved distribution function of ions in a plasma using a modulated, narrow linewidth, continuous-wave laser. Plasma emission is acquired with a high frame rate camera, and the laser light is spread into a thin sheet so that an entire plane of the plasma is imaged at each interrogation wavelength. Fourier analysis is conducted on each pixel of the images to separate the modulated fluorescent emission from the background light. Argon ion temperatures and bulk flow maps are reported in a helicon plasma source, and standard single-point LIF measurements provide validation of the PLIF measurement.
我们展示了使用调制的窄线宽连续波激光对等离子体中离子的速度分辨分布函数进行的平面激光诱导荧光（PLIF）测量。等离子体发射由高帧率相机采集，激光束被扩展成薄片，以便在每个询问波长下对等离子体的整个平面进行成像。对图像的每个像素进行傅里叶分析，以将调制的荧光发射与背景光分离。报告了螺旋波等离子体源中的氩离子温度和整体流场图，标准单点激光诱导荧光测量为平面激光诱导荧光测量提供了验证。
