STUDY ON NEW SINGLET OXYGEN GENERATOR FOR CHEMICAL OXYGENN-IODINE LASER BY USING MIST EFFECT

为研制化学氧碘激光用雾单线态氧发生器（Mist- sog）进行了研究。在雾- sog中，碱性过氧化氢（BHP）与Cl_2气体在气液界面上发生反应。通过制造直径为几十微米的小液滴来增加BHP的反应表面。Mist-SOG的目标是通过单次操作完全使用HO_2离子。所得结果总结如下：1。在我们的实验中，BHP是由45%的H_2O_2和48%的KOH合成的。因此，BHP利用率的极限为42%。实验中，当BHP流量为2.2ml/s， Cl2流量为9.0mmol/s时，15μm BHP液滴的Cl2利用率为79%，产率为80%，BHP利用率为41%。雾式SOG比传统SOG产生更多的水蒸气，因为BHP的热容量很小。水蒸气使受激的碘失活。为了除去水蒸气，我们研制了一种低温捕集器。当BHP流量为2.2ml/s， Cl2流量为3.5 mmol/s时，65μm BHP液滴的水蒸气分压由3.4 Torr降至1.1 Torr。开发了Mist-SOG的数值模拟程序。通过对实验结果和计算结果的比较，确定了BHP表面O_2（1Δ）的非均匀淬火概率为2 × 10^<-3>。当液滴直径为15μm时，BHP利用率为50%，O_2（^1Δ）收率为64%，C_l2利用率为88%。

This research has been done to develop a Mist Singlet Oxygen Generator (Mist-SOG) for Chemical Oxygen Iodine Laser. In the Mist-SOG, the reaction between Basic Hydrogen Peroxide (BHP) and Cl_2 gas occurs on the gas-liquid interface. The reaction surface of the BHP is increased by making small diameter droplets of tens micron. The goal of the Mist-SOG is a complete usage of HO_2 ion through a single pass operation. The obtained results are summarized as follows;1. BHP is made from 45wt% H_2O_2 and 48wt% KOH in our experiment. Therefore the limit of BHP utilization is 42%. In the experiment, 79% Cl2 utilization, 80% yield and 41% BHP utilization were obtained at the BHP flow rate of 2.2ml/s and Cl2 flow rate of 9.0mmol/s for the 15μm BHP droplets.2. Mist-SOG generates much more water vapor than conventional SOG because the heat capacity of the BHP is small. The water vapor vapor deactivates the excited iodine. In order to remove the water vapor, we developed a jet-cold trap. Water vapor partial pressure reduced from 3.4 Torr to 1.1 Torr at the BHP flow rate of 2.2ml/s and Cl2 flow rate of 3.5 mmol/s for the 65μm BHP droplets.3. A numerical simulation code for Mist-SOG is developed. The heterogeneous quenching probability of O_2(1Δ) for the surface of BHP was determined by a comparison between the experimental and calculated results, and was found to be 2x10^<-3>. For 15μm droplets diameter, 50% BHP could be utilized with an output of 64% O_2(^1Δ) yield and 88% C_l2 utilization.