Open AccessВоздействие импульсного тлеющего разряда атмосферного давления на алюминиевые пленки нанометровой толщины
Author(s) -
О.А. Емельянов,
А.П. Плотников,
Е.Г. Феклистов
Publication year - 2021
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2021.06.50752.18539
Subject(s) - cathode , joule heating , materials science , plasma , partial discharge , atmospheric pressure , corona discharge , voltage , pulse duration , brush discharge , atomic physics , optics , chemistry , electrical engineering , laser , composite material , meteorology , physics , quantum mechanics , engineering
The effect of a positive pulsed corona discharge on the thin-film cathode surface was studied in atmospheric pressure air gaps of 2–8 mm at voltages of 5–15 kV. Observed current pulses had the following parameters: repetition rate about 10-15 kHz, pulse duration of 300-500 ns, and amplitude of 10-20 mA. It was shown that at relatively low average currents of 20–50 μA, the discharge transforms into the glow one near the cathode. Due to the discharge channel radial contraction to micrometer scale, Joule heating of the formed cathode layer can lead to a temperature increase up to 1000 K and cause local erosion of the cathode surface. This mechanism should be taken into account when analyzing the interaction of discharge plasma with biological objects.