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制作了一台电子控制的微秒级光谱时间分解器。研究了铝电极间的火花放电光谱,估计了火花通道中的温度及其冷却速率。观察了改变电感及电容时各类谱线的强度随时间的变化与离子谱线和氮线相比较,原子谱线的出现时刻和达到极强值的时刻随电容增大而推迟,离子谱线的出现时间则缩短。各类谱线的出现时刻似乎不因电感的变化而改变。火花温度似乎与能量进入火花隙的速度没有太大关系。
An electronically controlled microsecond time-resolved spectrometer was fabricated. The spark discharge spectra between the aluminum electrodes were studied and the temperature and the cooling rate in the spark channel were estimated. The changes of the intensity of various spectral lines with time when changing the inductance and the capacitance are compared with those of the ion and nitrogen lines. The moment of occurrence of the atomic line and the moment of reaching the extreme value are delayed with the increase of the capacitance. The ion spectrum The appearance time is shortened. The appearance of all kinds of spectral lines does not seem to change due to the change of inductance. The temperature of the spark does not seem to have much to do with the rate of energy entering the spark gap.