Open AccessExperimental study of transient processes in a Glow Discharge
Author(s) -
R. F. Yunusov,
M. M. Garipov
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1370/1/012032
Subject(s) - brush discharge , cathode , glow discharge , anode , electrode , transient (computer programming) , current (fluid) , materials science , voltage , copper , analytical chemistry (journal) , electric discharge in gases , atmospheric pressure , atomic physics , electrical engineering , mechanics , chemistry , electric discharge , plasma , metallurgy , meteorology , physics , quantum mechanics , chromatography , computer science , engineering , operating system
The article experimentally investigated the features of a glow discharge with a hollow cathode in a longitudinal air flow. The discharge chamber consisted of glass sections separated by copper plates serving as probes. The channel formed by such sections and probes had a cylindrical shape. Air flowed through the hollow cathode into the cylindrical channel. The anode served as a metal grid. Probes and electrodes were made of copper. The distance between the electrodes was 6.5 cm. The air pressure P, its speed V, the discharge current I and its voltage U changed respectively in the ranges: P = (6, 4 - 19) kPa, V = (0 - 10) m / c, I = (5-100) mA, U = (1, 0 - 2, 2, 0) kV. Volt-ampere characteristic had negative differential resistance. It was found that in the range of discharge currents I = (40-80) mA, the forward and reverse branches of the current-voltage characteristics do not match. When the current decreases (reverse branch), the discharge voltage rises sharply. This is due to the process of transition of a glow discharge into its non-stationary form, which was observed visually and was recorded photographically for all the characteristic modes of discharge. It was also shown that the flow of air allows a reverse transition to the usual form of discharge.