同时测量氢氧CARS光谱确定火焰温度和氢氧浓度的研究  

Simultaneous CARS Measurements for Temperature and Concentrations of H_2 and O_2 in Premixed H_2/Air Flat Flame

作　　者：杨仕润[1] 赵建荣[1] 俞刚[1] 

机构地区：[1]中国科学院力学研究所高温气体动力学开放研究实验室,北京100080

出　　处：《中国激光》1999年第10期883-888,共6页Chinese Journal of Lasers

基　　金：国家自然科学基金

摘　　要：利用YAG激光器和一台染料激光器同时测量了氢／空气预混平面火焰中氢氧CARS光谱。从氢的S（5）和S（6）支统转动线的强度比获得火焰温度，并与由氮的CARS光谱得到的温度进行了实验校验。氢和氧的浓度分别由氢的S（6）支和氧的Q支光谱求得，并利用红／空气预混平面火焰的局部热力学平衡计算对所得浓度进行了校验。温度的校验误差为4％，而氢氧浓度的校验误差分别为14％和12％。N2 coherent anti-Stokes Raman spectroscopy (CARS) and H2-O2multiplex CARS employing a single dye laser have been explored to simultaneously determine the temperature and concentrations of H2 and O2 in a premixed H2/air flat flame burner. Systematic calibrations were performed through the well- characterized flame. In particular, the temperature measurement was accomplished using the intensity ratio of the H2 S(5) and S(6) rotational lines, while the extraction of H2 and O2 concentrations was obtained from the Hz S(6) and O2 Q -branches, respectively. Details of the calibration procedure and data reduction are discussed. The associated detection limits as well as calibration errors are also identified.

关 键 词：氢氧CARS光谱 预混平面火焰 染料激光器 

分 类 号：TN248.33[电子电信—物理电子学]