On the Mechanism of Ionic-Cluster Excitation of Argon Levels in Molecular Gas Mixtures

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

Аннотация

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.

Язык оригиналаанглийский
ЖурналPlasma Chemistry and Plasma Processing
DOI
СостояниеПринято в печать - 2021

Предметные области OECD FOS+WOS

  • 1.03 ФИЗИЧЕСКИЕ НАУКИ И АСТРОНОМИЯ
  • 2.05 ТЕХНОЛОГИЯ МАТЕРИАЛОВ
  • 2.04 ХИМИЧЕСКИЕ ТЕХНОЛОГИИ

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