Ｅffects of chemical kinetics and gain saturation model on the performance of chemical oxygeniodine laser

By combining the rate equation (RE) model with the chemical kinetics model, the effects of gain saturation models and chemical reaction systems on the performance of COIL are discussed in this paper. A premixed one-dimensional model is assumed for the flow field, and a chemical kinetics of 10 components and 21 reactions is adopted. The effects of undecomposed iodine molecular, yield of excited oxygen, content of water and temperature on the power of COIL are analyzed and calculated.The computational results show that much more energy is expanded in the processes of mixing and reaction if the flux of iodine is too much, and that much less flux of iodine results in lower gain, which is not benefit to extracting energy．