Hannover 2020 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 16: Poster Session 3

P 16.33: Poster

Mittwoch, 11. März 2020, 16:30–18:30, Empore Lichthof

The apokamp: Transient luminous event in physical laboratory — •Vasily Kozhevnikov, Andrey Kozyrev, Aleksandr Kokovin, Alexey Sitnikov, Eduard Sosnin, Victor Panarin, Victor Skakun, and Victor Tarasenko — Institute of High Current Electronics, Tomsk, Russian Federation

In 2016 the group of experimentalists led by Eduard Sosnin has been discovered a novel phenomenon in low-temperature plasma physics: an extended plasma jet developing perpendicular to the bending point of the pulsed arc discharge channel between two electrodes. The discharge has been entitled an apokamp. It was shown experimentally that the apokamp in low-pressure air represents an exact tiny analogue of large-scale stratospheric transient luminous events, e.g. blue jets or sprites depending on the operating pressure. Here we give first theoretical backgrounds for the apokamp phenomenon in terms of deterministic DC-discharge theory. We use so-called two-moment model of a multicomponent discharge plasma to describe a self-sustained periodic discharge in pure oxygen both in the inter-electrode gap and in the surrounding space above the electrodes.