大尺度磁分散电弧等离子体的探针诊断  

Langmuir-probe diagnostics of large-scale magnetically rotating arc plasmas

作　　者：焦凌云[1] 查俊[1] 白冰[1] 张晓宁[1] 夏维东[1] 

机构地区：[1]中国科学技术大学热科学与能源工程系,合肥230027

出　　处：《核聚变与等离子体物理》2012年第4期317-322,共6页Nuclear Fusion and Plasma Physics

基　　金：国家自然科学基金资助项目(NSFC50876101;NSFC11035005)

摘　　要：利用自行设计的快速移动静电探针对大气压下以氩气为工质的大尺度磁分散电弧等离子体进行诊断,分析了探针电压与电流的波形,绘制探针伏安特征曲线(U-I曲线),得到了发生器轴线方向等离子体波动特性以及电子温度沿轴线的变化趋势。发现等离子体发生器中心具有回流区,得到了电弧等离子体的大致体积。The fast-moving electric probe designed by ourselves is used to diagnose the large-scale magnetically rotating arc plasmas in the argon under the atmospheric pressure. The signal shape of the voltage and current of the electric probe is analyzed to draw the U-I curve. The fluctuation characteristic of the plasmas on the axis of the generator is obtained, and the axial distribution of the electron temperature on the axis of the generator is found. It is found that there is a recirculation zone in the center of the generator, and the approximate volume of the arc plasmas is got.

关 键 词：静电探针 大尺度 磁分散电弧 等离子体 电子温度 

分 类 号：O536[理学—等离子体物理] TL656[理学—物理]