正激波后OH A^2∑^+──X^2∏瞬态光谱的测量

SPECTROSCOPIC MEASUREMENTS OF OH A^2∑^+-X^2∏ BEHIND A NORMAL SHOCK WAVE

用光学多道分析仪（OMA光学系统）测量了氢氧燃烧驱动激波管中典型状态下正激波后高温空气不同时刻的瞬态光谱。光谱结果显示高温空气的光谱中有很强的OHA2∑＋─X2∏光谱。通过采用线线合成光谱的方法得到激波后不同时刻高温空气中OH分子的转动温度。

Spontaneous emission spectra of behind a normal shock wave in high temperature air were measured in a hydrogen oxygen combustion driven shock tube,in a typical condition. Intense radiation of OH A2∑+-X2∏ system was presented in the spectra of high temperature air. The rotational temperatures were determined using fits to synthetic OH molecular spectra at different time behind shock waves.