In this paper, the features of the process of argon radiation mixed with molecular and atomic impurities in condensing supersonic jets are studied experimentally. The mixture particles were activated by a well-focused electron beam. The dependence of the radiation intensity of individual argon lines on the gas-dynamic parameters in the jet is studied by changing the total density of the gas mixture due to changes in the stagnation pressure in the gas source chamber. The anomalous increase in the radiation intensity in a certain pressure range, which is different for different compositions of mixtures, was recorded on individual lines of atomic argon (Ar-I). At the same time, a similar effect was not detected in the spectrum of argon ions (Ar-II). It is established that anomaly was caused by the highly efficient molecular cluster mechanism of selective excitation of individual levels of argon atoms. It is absent in non-condensing jets and weakens at the stage of formation of large clusters. The main channels of energy transmission are discussed. The empirical model of the excitation-radiation process based on the obtained data was proposed.

本文通过实验研究了凝聚态超音速射流中掺入分子和原子杂质的氩辐射过程的特点。混合物颗粒由聚焦良好的电子束激活。通过改变气体混合物的总密度来研究单个氩气管线的辐射强度对射流中气体动力学参数的依赖性，这是由于气体源室中的停滞压力的变化而引起的。在特定压力范围内辐射强度的异常增加，对于不同的混合物组成是不同的，记录在原子氩 (Ar-I) 的各个线上。同时，在氩离子 (Ar-II) 的光谱中没有检测到类似的效果。已经确定异常是由选择性激发单个水平的氩原子的高效分子簇机制引起的。它在非冷凝射流中不存在，并在大团簇形成阶段减弱。讨论了能量传输的主要渠道。基于获得的数据提出了激发-辐射过程的经验模型。