scholarly journals Corona with streamers in atmospheric pressure air in a highly inhomogeneous electric field

2020 ◽  
Vol 3 (4) ◽  
Author(s):  
Victor Tarasenko ◽  
Evgenii Baksht ◽  
Vladimir Kuznetsov ◽  
Victor Panarin ◽  
Victor Skakun ◽  
...  
Keyword(s):  
Electric Field ◽  
Atmospheric Pressure ◽  
Research Data ◽  
High Electric Field ◽  
Inhomogeneous Electric Field ◽  
Plane Electrode ◽  
Current Pulses ◽  
Positive Streamers

The paper presents research data on positive and negative coronas in atmospheric pressure air in a highly inhomogeneous electric field. The data show that irrespective of the polarity of pointed electrodes placed in a high electric field (>200 kV/cm), this type of discharge develops via spherical streamers even if the gap voltage rises slowly (£0.2 kV/ms). The start voltage of first positive streamers, compared to negative ones, is higher and the amplitude and the frequency of their current pulses are much lower: about two times and more than two orders of magnitude, respectively. The higher frequency of current pulses from negative spherical streamers provides higher average currents and larger luminous regions of negative coronas compared to positive ones. Positive and negative cylindrical streamers from a pointed to a plane electrode are detected and successive discharge transitions at both polarities are identified.

scholarly journals On the formation of a bead structure of spark channels during a discharge in air at atmospheric pressure

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Victor Tarasenko ◽  
Dmitry Beloplotov ◽  
Alexander Burachenko ◽  
Evgenii Baksht
Keyword(s):  
Electric Field ◽  
Rise Time ◽  
Atmospheric Pressure ◽  
Negative Polarity ◽  
Inhomogeneous Electric Field ◽  
Iccd Camera ◽  
Voltage Pulses

The conditions for the formation of spark channels with a bead structure in an inhomogeneous electric field at different polarities of voltage pulses are studied. Voltage pulses with an amplitude of up to 150 kV and a rise time of ≈1.5 µs were applied across a 45-mm point-to-plane gap. Under these conditions, spark channels consisting of bright and dim regions (bead structure) were observed. It is shown that when current is limited, an increase in the rise time and the gap length does not affect the formation of the bead structure. It was found that an increase in the amplitude of voltage pulses leads to an increase in the length of beads. The appearance of the bead structure is more likely at negative polarity of the pointed electrode. The formation of spark channels was studied with a four-channel ICCD camera. 

scholarly journals Measurement of the duration of runaway current pulses using measuring equipment with bandwidths up to 50 GHz

2021 ◽  
Vol 2064 (1) ◽  
pp. 012009
Author(s):  
D V Beloplotov ◽  
V F Tarasenko ◽  
D A Sorokin ◽  
V S Ripenko ◽  
S B Leshchinskaia
Keyword(s):  
Electric Field ◽  
Measuring Equipment ◽  
Gas Pressure ◽  
Nanosecond Discharge ◽  
Runaway Electrons ◽  
Full Width ◽  
Half Maximum ◽  
Inhomogeneous Electric Field ◽  
Current Pulses

Abstract The duration of current pulses of runaway electrons generated during the formation of a nanosecond discharge in air in a sharply inhomogeneous electric field was measured using measuring equipment with a bandwidth of 50 GHz. The influence of the gas pressure and the shape of a cathode on the duration of the RE current pulses is investigated. Current pulses with full width at half maximum of 16–28 ps were recorded, depending on the conditions.

Study on Charge and Discharge Phenomenon of Lithium Ion Battery under High Electric Field

2020 ◽  
Vol 140 (8) ◽  
pp. 650-655
Author(s):  
Shoki Tsuji ◽  
Yoji Fujita ◽  
Hiroaki Urushibata ◽  
Akihiko Kono ◽  
Ryoichi Hanaoka ◽  
...  
Keyword(s):  
Electric Field ◽  
Lithium Ion Battery ◽  
Lithium Ion ◽  
High Electric Field

SIMULATION OF THE FLIGHT OF A DROP OF GALVANIC ELECTROLYTE IN AN INHOMOGENEOUS FIELD OF AN ELECTRIC CATCHER

2020 ◽  
Author(s):  
V.I. Garshin ◽  
◽  
A.R. Lebedev ◽  
S.E. Geraskova ◽  
◽  
...  
Keyword(s):  
Electric Field ◽  
Flight Path ◽  
Inhomogeneous Field ◽  
Inhomogeneous Electric Field ◽  
Trajectory Method

The article shows the relations for modeling an inhomogeneous electric field and the flight path of a drop of galvanic electrolyte in it. Estimates are preliminary. Articles and patents of authors in which non-uniform fields are already used are given. A modified trajectory method is proposed for evaluating the effectiveness of trapping harmful electrolyte droplets.

scholarly journals Response of a weakly magnetized hot QCD medium to an inhomogeneous electric field

2021 ◽  
Vol 103 (7) ◽  
Author(s):  
K. K. Gowthama ◽  
Manu Kurian ◽  
Vinod Chandra
Keyword(s):  
Electric Field ◽  
Inhomogeneous Electric Field
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