scholarly journals Экспериментальные исследования таунсендовского разряда с многоострийным катодом на динамической платформе из магнитоуправляемых частиц Fe и Fe-Al

2021 ◽  
Vol 91 (8) ◽  
pp. 1276
Author(s):  
И.А. Шорсткий ◽  
N. Yakovlev
Keyword(s):  
Field Strength ◽  
Discharge Current ◽  
Atmospheric Pressure ◽  
Cathode Surface ◽  
Electrode Gap ◽  
Current Voltage ◽  
Average Electric Field ◽  
Current Voltage Characteristics ◽  
Townsend Discharge ◽  
Discharge Gap

Experimental results of the Townsend discharge in the air gap and atmospheric pressure from a multi-pin cathode based on a dynamic platform of magnetically controlled Fe and Fe-Al particles presented. Dynamic platform method formation from magnetically controlled particles for cathode surface presented. The current-voltage characteristics are obtained for various configurations of the cathode design (with a flat electrode without magnetically controlled particles, with a multi-pin cathode with magnetically controlled Fe or Fe-Al particles), as well as with the presence of a heated spiral in the electrode gap. The use of a multi-pin cathode based on the dynamic platform of magnetically controlled Fe and Fe-Al particles allows to maintain the average electric field strength in the discharge gap and to increase the spark discharge current.

scholarly journals DC GAS BREAKDOWN AND TOWNSEND DISCHARGE IN CO2

2020 ◽  
pp. 154-158
Author(s):  
V.A. Lisovskiy ◽  
S.V. Dudin ◽  
P.P. Platonov ◽  
V.D. Yegorenkov
Keyword(s):  
Carbon Dioxide ◽  
Breakdown Voltage ◽  
Electrode Distance ◽  
Zero Current ◽  
Dc Discharge ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Gas Breakdown ◽  
Townsend Discharge ◽  
Maximum Voltage

We report the breakdown curves and current-voltage characteristics (CVC) of the Townsend mode DC discharge we have measured in carbon dioxide. We compare the breakdown curves measured with two different techniques. With the first technique we regard as breakdown voltage the maximum voltage which we can apply across the electrodes without igniting the discharge with fixed values of the inter-electrode distance and the gas pressure. With the second technique we register the CVC of the Townsend mode in the μA-mA range and then extrapolate them to zero current. We reveal that in the nA-μA range the CVCs of the Townsend mode may have a complicated behavior due to the formation of the space charge. Therefore the second technique furnishes incorrect values of the breakdown voltage.

Study on Bipolar Corona Discharge in Emitting Needle Electrode Configuration

2008 ◽  
Vol 11 (1) ◽  
Author(s):  
Haifeng Chen ◽  
Penghao Su ◽  
Shu Yang ◽  
Yimin Zhu
Keyword(s):  
Corona Discharge ◽  
Discharge Current ◽  
Experimental Results ◽  
Electrode Configuration ◽  
Needle Electrode ◽  
Discharge Electrode ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Spectrum Characteristics

AbstractThis paper systematically studied the current-voltage characteristics and the spectrum characteristics of bipolar corona discharge in multi-needle electrode configuration, and determined the optimized space between electrodes. The experimental results show that the discharge current I decreases with an increase in the needle radius a or the space between electrodes d, and increases with an increase in the space between needles s. Due to the symmetry of the discharge electrode configuration, the polarity of the HV electrode has no obvious influence on the discharge. Using the method of OES for measuring N

Radiative and Electrical Properties of a Center-Post Cathode Magnetron Glow Discharge Device

1988 ◽  
Vol 42 (4) ◽  
pp. 576-583 ◽  
Author(s):  
Suzanne Tanguay ◽  
Richard Sacks
Keyword(s):  
Magnetic Field ◽  
Electrical Properties ◽  
Glow Discharge ◽  
Field Strength ◽  
Constant Current ◽  
Glow Discharge Plasma ◽  
Basic Operation ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
The Magnetic Field

Current-voltage characteristics and spatially resolved atomic emission data are used to describe the basic operation of a magnetron glow discharge plasma device. The low-pressure glow discharge lamp uses a center-post cathode and a concentric ring-shaped anode. A coaxial magnetic field of a few hundred Gauss is used to achieve magnetron operation where plasma electrons are trapped in closed paths which are concentric with the electrode structure. This results in dramatic changes in the radiative and electrical properties of the device. With constant current, lamp operating voltage may be reduced by more than a factor of two when the magnetic field is present. The effects of filler gas pressure and magnetic field strength on the current-voltage characteristics are presented. The presence of the magnetic field results in a radial contraction of the plasma. This contraction increases with increasing field strength and with decreasing pressure. Ion lines from the Ar filler gas are more affected by the field than are neutral-atom lines from the cathode material.

scholarly journals Physical features of atmospheric pressure microdischarge system with vortex gas flows

2014 ◽  
Vol 13 (1) ◽  
Author(s):  
Iryna Prysiazhnevych ◽  
Vasyl Lendel ◽  
Valeriy Chernyak ◽  
Oksana Solomenko ◽  
Eugene Martysh ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Optical Emission ◽  
Video Camera ◽  
Plasma Jets ◽  
Gas Flows ◽  
Current Voltage ◽  
Ratio Set ◽  
Different Shapes ◽  
Current Voltage Characteristics ◽  
Physical Features

AbstractThe parameters for microdischarges of plasma medicine in air and argon vortex flows at atmospheric pressure for different shapes of electrodes (outlet nozzle and axis electrode diameters ratio set) have been investigated. The current-voltage characteristics of the designed systems have been analyzed, the parameters of the generated jets plasma have been investigated by means of the optical emission spectroscopy, and the form of plasma jets has been studied by using video camera.

scholarly journals DEVELOPING MANUFACTURING TECHNOLOGY OF COMPOSITE CATHODES WITH METHOD OF PRESSING PYROLYTIC GRAPHITE WITH TRIPLE CARBONATE

2018 ◽  
Vol 59 (8) ◽  
pp. 81
Author(s):  
Svyatoslav V. Lobanov ◽  
Ivan A. Fedorov ◽  
Evgeniy P. Sheshin
Keyword(s):  
Cathode Surface ◽  
Pyrolytic Graphite ◽  
Composite Cathode ◽  
Manufacturing Technology ◽  
Surface Processing ◽  
Field Emission Current ◽  
Current Voltage ◽  
Composite Cathodes ◽  
Current Voltage Characteristics

In this work a manufacturing technology for a composite cathode is described. In this cathode draphite and emission-active substance forms intercalated chemical compound. These cathodes were studied in a mode of field thermo electrone emission at temperatures of 0-1100 ° C and anode voltages of 1 – 15 kV. The article contains results of determination of optimal pressing parameters, different methods of cathode surface processing and field emission current-voltage characteristics.

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