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Atmospheric and Oceanic Optics

2017 year, number 3

Laboratory simulation of blue and red diffuse minijets in air environment

V.A. Panarin, V.S. Skakun, E.A. Sosnin, V.F. Tarasenko
High Current Electronics Institute of the Siberian Branch of the RAS, 634055, Tomsk, 2/3, Academichesky ave
Keywords: переходные световые явления, спрайты, стартеры, голубые струи, экспериментальное моделирование, апокамп, transient luminous events, sprites, starters, blue jets, experimental simulation, apokamp


Air environment pulse-periodic discharge in apokamp mode is studied. It is confirmed that the blue and red diffuse minijets (apokamps) form from the plasma discharge channel under the floating potential. It is shown that at low pressures the apokamps are units-tens of centimeters in size and possess the properties inherent to giant plasma jets (sprites, starters, and blue jets) observed in the Earth's atmosphere at altitudes of 17-100 km. Morphological, spectral, and electrophysical parameters of apokamps in various conditions are ascertained. It is found that plasma minijets are easier implementable at the positive polarity of the discharge channel. A gradual change in the color of diffuse jets with a decrease in the air pressure is demonstrated.