| Since its advent in 1965, chemical laser has undergone development for twogenerations. The first generation may be represented by the HF (or DF) chemicallaser and the second generation by the chemical oxygen iodine laser (COIL).Their wavelengths all lie in the IR region greater than 1 μm. To realize the visibleor even ultraviolet chemical laser, i. e. the third generation chemical laser, hasalways been the sustained target for the chemical laser researchers. At present,breakthrough has been achieved to a certain extent, light amplifications or laseroscillations have been observed in several chemical reaction systems, but theirpotentials for engineering scale-up are rather poor, and in fact, it is very difficultto develop high-energy and high-power chemical laser from them.In order to explore shorter wavelenth chemical laser, we proposed 866 nmO2(b) chemical laser based on the review and summarization of the 40 years ofchemical laser development. Cl2 gas reacts with basic hydrogen peroxide solutionto generate O2(a1△g), O2(b1Σg+ ) is subsequently produced via the energy poolingreaction 2O2(a1△g) →O2(b1Σg+)+O2(X3Σg-), and the O2(b1Σg+,v=0→X3Σg-,v″=1)stimulated emission will generate the about 866 nm near visible chemical laser.Because of the highly efficient generation of O2(a), O2(b) chemical laser isexpected to possess excellent engineering scale-up potential. With the proposal asthe theme, the dissertationwillmainly include the following contents.(1) A one-dimension pre-mixed model for the 866 nm O2(b) chemical laserwas built, from which the two requirements for realizing O2(b) chemical laser wastheorectically found out to be high O2(a) concentration and very low water vaporcontent.(2) A mini-type jet singlet oxygen generator (JSOG) was setup. The conditionfor generating high O2(a) concentration was studied experimentally andtheorectically, and the design route and scheme for high pressure JSOG wasobtained. (3) For the sake of removing the water vapor content in O2(a) gas flow,various dehydration methods, including molecular sieve, cold trap, and cold jet,etc. were tested. (4) Various related measurement techniques including the improved infraredradiation-calorimetry method and the direct infrared radiation method for O2(a)absolute concentration detection, UV absorptiometry for Cl2 utilization detection,and emission spectrum method for water vapor content detection, were developedand improved on the mini-type JSOG platform, and the whole detection systemwas also constructed. The conclusion: if O2(a) gas flow can be dehydrated efficiently at highpressure, it is very possible to realize the O2(b) chemical laser.
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