小型单重态氧发生器中氯气利用率的测量

Measurement for chlorine utilization in a minitype singlet oxygen generator

在一台为化学氧碘激光器而研制的小型射流式单重态氧发生器上建立了一套氯气利用率测量系统; 从实验和理论两方面详细研究了光源线宽、气流温度、水气含量、气流组分对紫外吸光光度法测量氯气利用率 的影响;测量结果和误差分析表明,在良好设计的实验中,氯气利用率的相对测量误差约为2％,主要来源于光 电倍增管(PMT)的噪音。最后,提出了减少测量误差和扩大氯气利用率测量量程的方法。我们的工作将有助于 更加准确地和精确地测量化学氧碘激光系统中的单重态氧发生器的氯气利用率。

The measuring system for chlorine utilization was built on a minitype jet singlet oxygen generator （JSOG）. The influence of light-source bandwidth, gas temperature, water vapor content and other gas components on the chlorine utilization measured by UV absorptiometry was experimentally and theoretically studied in detail. For a well designed experimental setup, the relative error for the chlorine utilization measurement was about ±2%, which mainlv caused by the noise of the photomultiplier （PMT）. On the basis of error analysis, a method to further decrease the measuring error and also extend the measuring range of chlorine utilization was proposed. This study will be helpful for the accurate chlorine utiliza- tion measurement in the singlet oxygen generator （SOG） for a chemical oxygen iodine laser （COIL） system.