高频感应等离子体风洞的光谱诊断  

The spectral measurement in an inductively coupled plasma wind tunnel

作　　者：张秀杰[1] 林烈[1] 吴彬[1] 

机构地区：[1]中国科学院力学研究所,北京100080

出　　处：《空气动力学学报》2001年第1期123-127,共5页Acta Aerodynamica Sinica

摘　　要：建立高频感应等离子体风洞在国内是近几年的事情 ,因此对风洞内等离子体参数的诊断也刚刚开始。本文论述了利用氩光谱的相对强度法测量高频感应风洞的等离子体温度及其分布的原理和装置 ,并给出了实验结果。An inductively coupled plasma wind tunnel was built in our laboratory. The temperature of plasma and its distribution were measured with an Optical Spectra Analyzer. The experiment was conducted for a oscillator frequency of 4.0 MHz, input power of 30 kW. The relative intensities of atomic argon lines (ArI750.4nm and ArI751.5nm) were used to get the plasma temperature and its distribution. The experimental apparatus and instrumentation for measurements were shown in this paper. The local thermal equilibrium (LTE) in the plasma of wind tunnel was discussed.

关 键 词：等离子体风洞 等离子体光谱诊断 局部热力学平衡 高频感应 

分 类 号：V211.745[航空宇航科学与技术—航空宇航推进理论与工程]