单重态氧发生器出口气流中O_2(~1Δ)及水汽绝对浓度的测量

Measurement of Absolute Concentration of Both O_2(~1Δ) and Water Vapor in Outlet Stream of Singlet Oxygen Generator

单重态氧发生器是氧碘化学激光器的核心部件 ,O2 (1Δ)和水汽的粒子数密度 (绝对浓度 )是单重态氧发生器的两个重要参量 ,其中O2 (1Δ)是氧碘化学激光器的能源 ,而水汽对氧碘化学激光器的发光介质—I 有强烈的淬灭作用。如何简单准确地测量这两个参量 ,一直是氧碘化学激光器研究中的一个难题。利用体光源模拟标定法 ,得到了O2 (1Δ)和水汽的绝对浓度 ,并且成功地用一套实验装置对射流式单重态氧发生器的上述两个参量进行了实时测量 ,得到了两个参量的变化曲线 ,同时还提供了O2 (1Δ)的产率以及水汽体积浓度等参量的变化曲线 ,通过大量实验结果 ,给出了各参量的变化规律 ,为射流式单重态氧发生器研究提供了有力的参考依据。

As the energy source of the chemical oxygen iodine laser (COIL) the singlet oxygen generator (SOG) is a key part of the COIL, and consequently, the concentration of O 2( 1Δ) and water vapor is two important parameters for the SOG. The concentration of water vapor is another important parameter for the SOG because water can strongly quench I * which is the luminesent medium of COIL. It is a difficult problem how to measure the two parameters easily and accurately. The piston source method has been used to measure the absolute concentration of O 2( 1Δ) and water vapor in a jet-type SOG. Some curves about the O 2( 1Δ) yield and water vapor concentration also has been given. The change law of the varions parameters is given from a quantity of experimental results. These results offer references for studying the jet-SOG.