HL-2A等离子体边缘的快速单探针测量  

Measuring the HL-2A edge plasma with a fast-speed single probe

作　　者：洪文玉[1] 潘宇东[1] 王恩耀[1] 严龙文[1] 钱俊[1] 

机构地区：[1]核工业西南物理研究院,成都610041

出　　处：《核聚变与等离子体物理》2005年第2期157-160,共4页Nuclear Fusion and Plasma Physics

基　　金：国家自然科学基金资助项目(10235010)

摘　　要：介绍了对HL 2A装置中平面边缘等离子体的单探针测量。单探针是安装在可径向移动、并可绕轴旋转360o的传动杆上的。在1MHz的快速采样频率下,测量了主等离子体边缘的温度、密度、悬浮电位、空间电位、极向等离子体流速的径向分布。测量的结果表明,利用单探针测量的主等离子体边缘参数与朗缪尔四探针测量结果基本一致。Measurements of the HL-2A edge plasma near the mid-plane with a fast-speed single probe are presented in the paper. The Langmuir probe is mounted on a long shaft, which can be shifted radially and rotated circularly. The radial profiles of the plasma edge electron temperature, density, floating potential, spacing potential and poloidal flow velocities have been measured utilizing a 1 MHz fast-sampling module. The results obtained show that radial profiles of the temperature and the density measured with the single probe are in agreement to those with a four-probe system.

关 键 词：等离子体边缘 测量 HL-2A装置 边缘等离子体 采样频率 悬浮电位 径向分布 边缘参数 传动杆 四探针 

分 类 号：TL631.24[核科学技术—核技术及应用] TP274.2[自动化与计算机技术—检测技术与自动化装置]