Abstract

The role of clustered particles in the formation of a secondary flow (“wake”) upon the outflow of gas into a rarefied medium in condensation modes is found out. The boundaries of the “wake” are found by comparing the spectral and photometric measurements. Possible mechanisms of the initiation of its glow are considered. The role of the energy exchange of clusters with background gas in the afterglow of the “wake” is established. The wavelengths and corresponding transitions in the neutral (Ar-I) and singly ionized (Ar-II) argon atoms, which cause the anomalous glow, are determined. The lifetimes of particles in the excited state in the central part and on the periphery of the clustered flow are found. The effect of condensation on the penetration of the background gas into the primary traditional supersonic jet and into the “wake” zone is found.

中文翻译：

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高压电子束激发超音速团簇射流异常二次流的辉光成因

摘要

发现了聚集颗粒在气体以冷凝模式流出到稀薄介质中时在二次流（“尾流”）的形成中的作用。通过比较光谱和光度测量可以找到“苏醒”的边界。考虑了其发光开始的可能机制。建立了簇与背景气体的能量交换在“苏醒”余辉中的作用。确定了导致异常辉光的中性（Ar-I）和单电离（Ar-II）氩原子中的波长和相应的跃迁。发现了在聚集流的中心部分和外围的处于激发状态的粒子的寿命。发现了凝结对背景气体渗透到传统的传统超音速射流和“苏醒”区中的影响。