scholarly journals SIMULATION OF THE ELECTRIC FIELD IN THE ELECTRODE SYSTEM TO CREATE OF A PULSED BARRIER DISCHARGE IN ATMOSPHERIC AIR IN THE PRESENCE OF WATER IN A DROPLET-FILM STATE

2020 ◽  
Vol 2020 (2) ◽  
pp. 17-22
Author(s):  
V.O. Bereka ◽  
◽  
I.V. Bozhko ◽  
V.A. Brzhezitsky ◽  
Ya. Haran ◽  
...  
Keyword(s):  
Electric Field ◽  
Barrier Discharge ◽  
Electrode System ◽  
Atmospheric Air ◽  
Film State

scholarly journals Clarifications on the Behavior of Alternative Gases to SF6 in Divergent Electric Field Distributions under AC Voltage

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1065
Author(s):  
Houssem Eddine Nechmi ◽  
Michail Michelarakis ◽  
Abderrahmane (Manu) Haddad ◽  
Gordon Wilson
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Partial Discharge ◽  
Mean Value ◽  
Electrode System ◽  
Polarity Reversal ◽  
Buffer Gas ◽  
Co2 Gas ◽  
Breakdown Mechanism ◽  
Positive Cycle

Negative and positive partial discharge inception voltages and breakdown measurements are reported in a needle-plane electrode system as a function of pressure under AC voltage for natural gases (N2, CO2, and O2/CO2), pure NovecTM gases (C4F7N and C5F10O) and NovecTM in different natural gas admixtures. For compressed 4% C4F7N–96% CO2 and 6% C5F10O–12% O2–82% CO2 gas mixtures, the positive-streamer mode is identified as the breakdown mechanism. Breakdown and negative partial discharge inception voltages of 6% C5F10O–12% O2–82% CO2 are higher than those of 4% C4F7N–96% CO2. At 8.8 bar abs, the breakdown voltage of 6% C5F10O–12% O2–82% CO2 is equal to that of 12.77% O2–87.23% CO2 (buffer gas). Synergism in negative partial discharge inception voltage/electric field fits with the mean value and the sum of each partial pressure individually component for a 20% C4F7N–80% CO2 and 6% C5F10O–12% O2–82% CO2, respectively. In 9% C4F7N–91% CO2, the comparison of partial discharge inception electric fields is Emax (CO2) = Emax(C4F7N), and Emax (12.77% O2–87.23% CO2) = Emax(C5F10O) in 19% C5F10O–81%(12.77% O2–87.23% CO2). Polarity reversal occurs under AC voltage when the breakdown polarity changes from negative to positive cycle. Polarity reversal electric field EPR was quantified. Fitting results show that EPR (CO2) = EPR(9% C4F7N–91% CO2) and EPR(SF6) = EPR (22% C4F7N–78% CO2). EPR (4% C4F7N–96% CO2) = EPR (12.77% O2–87.23% CO2) and EPR (6% C5F10O–12% O2–82% CO2) < EPR (4% C4F7N–96% CO2) < EPR (CO2).

Direct measurement of the characteristic three-body electron attachment time in the atmospheric air in direct current electric field

2013 ◽  
Vol 103 (3) ◽  
pp. 034106 ◽  
Author(s):  
A. V. Shutov ◽  
I. V. Smetanin ◽  
A. A. Ionin ◽  
A. O. Levchenko ◽  
L. V. Seleznev ◽  
...  
Keyword(s):  
Electric Field ◽  
Direct Measurement ◽  
Direct Current ◽  
Electron Attachment ◽  
Atmospheric Air ◽  
Direct Current Electric Field ◽  
Three Body ◽  
Current Electric Field

Analysis on Electrical Breakdown Characteristics of Atmospheric Air according to the Electric Field Non-uniformity

2021 ◽  
Vol 70 (11) ◽  
pp. 1697-1704
Author(s):  
Geon Kim ◽  
Jin-Tae Kim ◽  
Hongsuk Noh ◽  
Kyungrok Yun ◽  
Sehyun Kim ◽  
...  
Keyword(s):  
Electric Field ◽  
Electrical Breakdown ◽  
Atmospheric Air

scholarly journals Characteristics of Bipolar Nanosecond Discharges in Air Formed in the Electrode System “BLADE-SURFACE of Nonmetallic Liquid -BLADE”

2020 ◽  
Author(s):  
Alexander Shuaibov ◽  
Alexander Minya ◽  
Igor Shevera ◽  
Antonina Malinina ◽  
Roksolana Gritsak ◽  
...  
Keyword(s):  
Barrier Discharge ◽  
Metal Oxide Nanoparticles ◽  
Electrode System ◽  
Distilled Water ◽  
High Current ◽  
Blade Surface ◽  
Colloidal Solutions ◽  
Electrolyte Surface ◽  
Uniform Plasma ◽  
Macroscopic Amount

Curcumin The design of the device for producing a high-current, bipolar nanosecond discharge over the surface of a non-metallic liquid (water, electrolytes, alcohols, etc.) in air is given. Air pressure is ranged from 5 to 101 kPa. The distance between the tip of the blade and the surface of water or liquid (5% solution of copper sulfate in distilled water) was 4 mm, and the distance between parallel metal blades was 40 mm. The conditions for uniform plasma overlapping of the electrolyte surface between the metal blades are established. The spatial, electrical, and optical characteristics of the discharge are investigated. It is shown that the discharge under study allows obtaining colloidal solutions of copper nanoparticles in distilled water in a macroscopic amount (1 liter or more). The developed reactor is of interest for use in poisonous chemical solution disinfection systems, solutions based on dangerous bacteria and viruses for which the use of traditional systems with a point spark discharge or a barrier discharge becomes ineffective. The rector is also promising for the synthesis of colloidal solutions of transition metal oxide nanoparticles from solutions of the corresponding salts. These solutions can be used in micro-nanotechnology and for antibacterial treatment of plants in greenhouses, processing of medical instruments and materials.

Electric-field induced second-harmonic generation of femtosecond pulses in atmospheric air

2018 ◽  
Vol 112 (24) ◽  
pp. 241101 ◽  
Author(s):  
Tianli Feng ◽  
Nils Raabe ◽  
Pascal Rustige ◽  
Günter Steinmeyer
Keyword(s):  
Electric Field ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Femtosecond Pulses ◽  
Atmospheric Air
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