发射光谱法测量空气直流电弧温度分布与电子密度

摘要

DC arc plasma emission spectrums were measured by using the spectral diagnosis system.Three spectral lines of CuⅠ with wavelength of 510.5nm,515.3nm and 521.8nm are chosen as the characteristic spectrums.The electron temperature,the electron density and the spatial distribution regularities were obtained using the multi-spectrum slope method and Stark broadening,respectively.%利用光谱诊断系统对空气直流电弧等离子体的发射光谱进行了测量.以CuⅠ波长在510.5 nm、515.3 nm、521.8 nm的3条谱线作为特征谱线,使用多谱线斜率法和Stark展宽法分别计算求得等离子体的电子温度和电子密度,并得到了直流电弧等离子体电子温度的空间分布规律.