Abstract

An analysis of a set of experiments on studying subthreshold microwave self/non-self-sustained (SNSS) discharges made it possible to estimate the volume of the active zone of self-sustained thread-like discharges resulting from the development of the ionization–overheating instability. It is shown that this volume is 0.04–0.1 of the wave beam volume. It is shown that in the processes of the plasma-chemical action of the SNSS discharge, mixing of the substance reacted in the active regions with the gas outside the active regions increases the cost of the plasma-chemical process. A decrease in the energy cost of plasma-chemical processes requires an increase in the ratio of the microwave beam volume to the plasma-chemical reactor volume. A scheme of a flow-through reactor with a multimode waveguide is proposed and the possible performance of such a design in the destruction of harmful impurities in gas mixtures is estimated.

中文翻译：

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空气中波束中亚阈值微波放电的特性和等离子化学反应器的效率

摘要

对一组研究亚阈值微波自持/非自持 (SNSS) 放电的实验进行分析，可以估计由电离-过热发展引起的自持线状放电活动区的体积不稳定。结果表明，该体积是波束体积的 0.04-0.1。结果表明，在SNSS放电的等离子体化学作用过程中，在活性区反应的物质与活性区外的气体混合，增加了等离子体化学过程的成本。等离子体化学过程能源成本的降低需要增加微波束体积与等离子体化学反应器体积的比率。