小尺寸瞬态等离子体电子密度光谱法试验研究

Diagnoses of mini instantaneous plasma electron density by the atomic emission spectrum

本文对SCB等离子体发射光谱进行了试验研究,在局部热力学平衡条件下,用Al I 394.40nm谱线Stark的展宽法测量了SCB等离子体的电子密度;在发射光谱和Saha方程理论的基础上,设计并建立一套测试仪器,时间分辨率为0.1μs,将其测量的电子密度与同种试验条件下的Stark展宽法得到的结果相比较,电子密度的数量级都为10^(15)cm^(-3)～10^(16)cm^(-3),且随时间的变化的规律相同.

Under the condition of local thermodynamic equilibrium （LTE）,the method of Stark broadening of Al I 394.40 nm and Saha equation were used to measure the SCB plasma electron density, respectively. The electron density was 10^15 cm^-3 - 10^16 cm^-3 in identical magnitude, comparing with result from the other method, and the rule of the time evolution of electron density was same.