无稀释气立式氧碘化学激光器的设计与实验
Design and experimental results of VertiCOIL operating without primary buffer gases
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摘要: 分析了氧碘化学激光器（COIL）在无稀释气条件下工作所带来的一系列问题和对其性能的影响，并提出了相应的解决方法，进而对COIL结构和相关参数进行了有针对性的设计和实验研究。在氯气流量为117.6 mmol/s时,平均输出功率2.25 kW，化学效率达到21.1%，比功率0.22 J/g；分别以氦气和氮气为稀释气，对COIL进行了参数和实验数据比较。Abstract: An efficient VertiCOIL with a square pipe-array jet-type singlet oxygen generator and without primary buffer gas was demonstrated in our laboratory. The most important motivation for no primary buffer gas is that it easily enables the use of a cryosorption pump as the vacuum pumping system, besides, it can greatly reduce the cost and volume of COIL systems for industrial applications. A nozzle bank, with a gain length of 11.7 cm, a subsonic iodine-oxygen mixing length of 4 mm and a designed Mach number of 2.5, is energized by a specially designed SPJSOG operating with no buffer gas. As a result of optimization of the SOG parameters, a maximum output power exceeding 2.25 kW with chemical efficiency of 21.1%, a nozzle exit flux of 64 W/cm2 and a specific power of 0.22 J/g were obtained for a
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