摘要
直流等离子体射流的电子激发温度,是等离子体射流物理特性中的一个非常重要的参数,并且影响着射流中其他众多特征参数。文章采用发射光谱诊断技术对直流氩等离子体射流进行实验研究,对实验所测得的射流的光谱强度信号进行分析,并采用玻尔兹曼曲线斜率法计算等离子体射流的激发温度。实验结果表明,等离子体射流的激发温度在等离子体发生器的轴向上的分布,随着离出口的距离增大,激发温度显著地下降。并且激发温度受电流和流量的影响较大,提高电源的输出电流,或者增加氩气的流量,激发温度都会升高。
The electron temperature of DC arc plasma jet is an important parameter, which determines the characteristics of plasma jet. The measurement of emission spectrum was performed to obtain the spectral intensities of some Ar lines and the method of diagrammatic view of Boltzmann was adopted to calculate the electron temperature. The results indicated that the electron temperature dropped at different speed along with the axes of the plasma jet and rose rapidly when the current was increased, and it also rose when the flowrate of argon was increased.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2008年第1期6-9,共4页
Spectroscopy and Spectral Analysis
基金
科技部中法先进研究计划(PRAE01-06)
浙江省国际合作重点项目(2005C14014)资助
关键词
等离子体
发射光谱诊断
激发温度
玻尔兹曼图解
Plasma
Emission spectrum diagnosis
Excitated temperature
Diagrammatic view of Boltzmann
