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Journal articles on the topic 'Corona discharge'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 September 2023

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1

Kim, Seong Jun, Ji Kyun Kim, Hyeon Seok Lee, Jeong Yeol Kwon, and Heon Yong Lee. "A Study on Improved Characteristics of Electric Charge Storage after Thermal Treatment Using Teflon FEP Film." Solid State Phenomena 124-126 (June 2007): 319–22. http://dx.doi.org/10.4028/www.scientific.net/ssp.124-126.319.

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In this paper, we studied the method of electrets electrode which formed to accumulate negative electric charge by corona discharge. The breakdown voltage sample and damaged sample by various corona discharges have made material stabilization and improved characteristics of electric charge storage throughout the annealing process. After the experiment made material stabilization nearly melting point by many kinds of annealing conditions, we did the corona discharge again by the charged high voltage, a discharge electrode gap, and a discharged time. As we compared it with the best condition, we confirmed that characteristics of electric charge storage were improved.

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2

MI, JUNFENG, DEXUAN XU, XIMEI TIAN, YINGHAO SUN, and XIAOYU ZHANG. "COMPARATIVE INVESTIGATIONS ON MAGNETICAL ENHANCED NEGATIVE- AND POSITIVE-CORONA DISCHARGES." International Journal of Modern Physics B 23, no. 26 (October 20, 2009): 5131–42. http://dx.doi.org/10.1142/s0217979209053710.

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The magnetically enhanced negative- and positive-corona discharges were compared in the current study. In the magnetically enhanced corona discharges, some small permanent magnets were employed to form the local magnetic fields on the corona discharge region, in which the Larmor movements of free electrons enhance ionizations of the gas molecules. The characteristics of discharge current changing in the magnetically enhanced corona discharges were firstly revealed here. The experimental results showed that the relative increases of corona discharge currents had a maximum value in both the magnetically enhanced negative- and positive-corona discharges, when a magnetic field was fixed and the inter-electrode voltages were changed. The reasons for the maximum values were analyzed in detail. In addition, comparing with the magnetically enhanced positive-corona discharge, the inter-electrode voltage for the maximum value is lower for the negative one, because the intensity of inter-electrode electric field was altered by the accumulations of positive or negative ions.

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3

Béquin, Philippe, Vincent Joly, and Philippe Herzog. "Corona Discharge Velocimeter." Acta Acustica united with Acustica 104, no. 3 (May 1, 2018): 477–85. http://dx.doi.org/10.3813/aaa.919190.

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4

Chang, J. S., P. A. Lawless, and T. Yamamoto. "Corona discharge processes." IEEE Transactions on Plasma Science 19, no. 6 (1991): 1152–66. http://dx.doi.org/10.1109/27.125038.

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5

Lv, Duo, Yang Zhou, Jiqiu Liu, Feng Li, Wangling He, Yanzhao Wang, Baoquan Wan, Zheyuan Gan, and Hongyu Wei. "DC negative corona discharge characteristics of the needle-plate electrode under different air pressures." Journal of Physics: Conference Series 2564, no. 1 (August 1, 2023): 012013. http://dx.doi.org/10.1088/1742-6596/2564/1/012013.

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Abstract Because of the low normal atmospheric pressure and frequent, more severe corona discharges in high-altitude regions. The electromagnetic environment problems caused by the corona discharge restrict the line design in high-altitude areas. The variance in the law of negative DC corona characteristics under different air pressure conditions is derived using an artificial climate tank with adjustable air pressure. The characteristics of the negative DC needle-plate corona discharge were measured experimentally. The negative DC corona discharge pulses at 89.4 kPa–56.04 kPa were obtained, and the characteristics of the current pulses were statistically examined. The study of the mechanism of the DC corona discharge can benefit from the research findings as essential reference data.

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6

Han, Xiao, Xi Chen, and Peng Fei Li. "Design of the Miniaturized Receiving Antenna Applied in the Detection of Corona Discharge Signals." Applied Mechanics and Materials 105-107 (September 2011): 2188–93. http://dx.doi.org/10.4028/www.scientific.net/amm.105-107.2188.

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Corona discharge is a kind of self maintained discharges that occurs in the extremely uneven electric field which often happens in the industrial and daily living environments. In this paper, we study the characteristics of corona discharge, especially the ones in the time domain and frequency domain of negative corona discharge. Based on the analyzed characteristics mentioned above, we design and optimize a kind of patch antennas, which has the advantages of small volume compared to the traditional one used to receive the signals generated by corona discharge. This new antenna can be used in the field of security inspection on high voltage transmission lines applied in the industrial applications.

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7

Maezono, I., and Jen‐Shih Chang. "Flow‐enhanced corona discharge: The corona torch." Journal of Applied Physics 64, no. 6 (September 15, 1988): 3322–24. http://dx.doi.org/10.1063/1.341512.

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8

Yang, Lizhao, Xiaodong Fang, and Libing You. "Numerical Analysis of Corona Pre-Ionization for High-Power Discharge-Pumped XeCl* Excimer Lasers." Journal of Nanoelectronics and Optoelectronics 17, no. 3 (March 1, 2022): 436–45. http://dx.doi.org/10.1166/jno.2022.3219.

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The working gas of discharge-pumped excimer lasers is generally a mixture of rare gases and monohalide. Typically, the working gas is preconized to generate reproducible uniform glow discharge. In high-power (more than 100 W) excimer lasers, this pre-ionization is achieved through spark discharge in the discharge chamber. In this study, a high-power discharge-pumped XeCl* excimer laser with corona preionisation was designed to investigate the feasibility of applying corona preionisation in high-power excimer lasers as well as analyse the correlation of corona discharges characteristics with laser discharge properties. The electron avalanche triggered by ultraviolet preionisation in the laser was numerically studied by creating 2D models. The simulation results revealed that the additional ionisation induced by the secondary electron emission of the cathode together with the dielectric constant of the corona bars significantly affect the discharge current of the principal electrodes. Under the condition of the design values, the peak preionisation electron density between electrodes was approximately 108 cm−3, and the laser discharge was quite uniform, which theoretically proved the feasibility of using corona preionisation instead of spark discharge preionisation in high-power practical devices.

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9

Nguyen, T. T. "Corona discharge streamer model." IEE Proceedings C Generation, Transmission and Distribution 139, no. 1 (1992): 31. http://dx.doi.org/10.1049/ip-c.1992.0006.

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10

Halahmi, E., and L. Kronik. "Color corona discharge images." IEEE Transactions on Plasma Science 24, no. 1 (1996): 87–88. http://dx.doi.org/10.1109/27.491704.

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11

Jaworek, Anatol, Arkadiusz Sobczyk, Tadeusz Czech, and Andrzej Krupa. "Corona discharge in electrospraying." Journal of Electrostatics 72, no. 2 (April 2014): 166–78. http://dx.doi.org/10.1016/j.elstat.2014.01.004.

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12

Sin’kevich, A. A., and Yu A. Dovgalyuk. "Corona Discharge in Clouds." Radiophysics and Quantum Electronics 56, no. 11-12 (April 2014): 818–28. http://dx.doi.org/10.1007/s11141-014-9484-y.

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13

Kozhevnikov, Vasily Yu, Andrey V. Kozyrev, Victor F. Tarasenko, Aleksandr O. Kokovin, Evgeni Kh Baksht, and Nikita P. Vinogradov. "Key Modes of Ignition and Maintenance of Corona Discharge in Air." Energies 16, no. 13 (June 21, 2023): 4861. http://dx.doi.org/10.3390/en16134861.

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Theoretical and experimental studies of various modes of corona discharge operation in atmospheric pressure air are presented in this short review. The original results of modeling negative corona discharges are presented, taking into account the non-stationary plasma-chemical kinetics of charged particles in air plasma. The space–time evolution of the discharge in needle-to-plane geometry is investigated and analyzed. Several stages of discharge development are revealed from the moment of initiation of a low-negative current corona to the quasi-stationary mode of a glow discharge. Experimental data of the authors are presented. Modern technology and diagnostic equipment with a wide variation of the main parameters (the shape and polarity of the applied voltage, the type of gap, etc.) was used. The measurement of the optical characteristics of the plasma glow was carried out with high spatial resolution. Corona discharge current pulse profiles in the air at atmospheric pressure have been recorded with subnanosecond time resolution. With a positive polarity of the pin electrode and high voltage, a transition from a spherical streamer initiating a corona discharge to a cylindrical streamer is shown. The author’s results are rigorously evaluated through a critical comparison with findings from other research groups.

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14

Zhao, Zheng, Chenjie Li, Xinlei Zheng, Anbang Sun, and Jiangtao Li. "Periodical discharge regime transitions under long-term repetitive nanosecond pulses." Plasma Sources Science and Technology 31, no. 4 (April 1, 2022): 045005. http://dx.doi.org/10.1088/1361-6595/ac6050.

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Abstract Intuitively, the nanosecond repetitively pulsed (NRP) corona and spark regimes are sustained successively after onsets due to the high background electron density and/or the surplus heat. In this paper, the NRP discharge unexpectedly swings among different regimes (corona → glow → spark → corona → …) in one pulse train, which is characterized by the periodical spark quench and reestablishment. We have investigated discharge regime instabilities by applying long-term repetitive high-voltage nanosecond pulses of ∼15 ns duration to needle–needle and needle–plane gaps in atmospheric-pressure N2 and N2–O2 mixtures. Pulse-sequence resolved electrical and optical diagnostics have been implemented to capture transition processes. The initial corona gradually grows into glow and then spark ‘pulse-by-pulse’, however, the spark regime was interrupted after a certain number of voltage pulses until the next reestablishment. Narrow pulse width impedes the discharge instability growth within one pulse, and a certain number of voltage pulses are required for the discharge regime transition. The addition of O2 dramatically boosts the duration length of spark regime. A lower output impedance of the power supply induces a higher deposited energy into a spark, however, not necessarily leads to a longer spark regime duration, although both the energy storage and the average electric field strength are approximate. Polarity effects, conventionally diminished in pulse-periodic discharges, are still evident during the discharge regime transition. The periodical discharge regime transition is qualitatively explained based on the plasma–source coupling and the evolution trajectory along the power transfer curve. Feedback mechanisms and residual-conductivity related screening effect in NRP spark discharges are analyzed based on a simplified 0D simulation. The periodical feature is probably caused by the insufficient average deposited energy per unit distance per one pulse cycle. In-depth understandings of ‘non-binary’ regimes (neither corona nor spark) and memory effect mechanisms of NRP discharges could be reached.

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15

Zhang, Li, Li Bo Liu, and Bing Sun. "Degradation of Crystal Violet by Pulsed Corona and Spark Discharge: Determination of Removal Mechanism." Advanced Materials Research 781-784 (September 2013): 338–41. http://dx.doi.org/10.4028/www.scientific.net/amr.781-784.338.

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The pulsed discharge includes corona discharge and spark discharge. The voltage waveforms, photo, the decoloration rate of Crystal violet in corona discharge and spark discharge were investigated respectively. The results show that the spark discharge is more intense than the corona discharge. The decoloration rate of Crystal violet by spark discharge is 90%, which is higher than that corona discharge. From the UV-Visible and FTIR spectra, we can see that the molecular conjugated system and the benzene ring of CV were damaged by pulsed discharge.

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16

Li, Peng Fei, Zi Qi Zhu, Fan Bai, and Xi Chen. "Design of Experimental System for Corona Discharge in High-Velocity Airflow." Applied Mechanics and Materials 105-107 (September 2011): 1946–50. http://dx.doi.org/10.4028/www.scientific.net/amm.105-107.1946.

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Corona discharge is a kind of self-sustained discharge that emerges in daily life, industrial production and other fields. A variety of works have been done on this issue. And corona discharge in high-velocity airflow is of great significant especially. In this paper, an experimental system is proposed and assembled, to research the characteristics of corona discharge in high-velocity airflow and the differences between corona discharge with and without high-velocity airflow. By comparing simulation results of velocity field and pressure field of air amplifier and Laval nozzle, proper airflow supply device is selected. The experiment cabin is designed following the requirements of corona discharge to airflow by mathematical calculation. We also design the discharge device and receiving device by theoretical analyses. Experiments of corona discharge with and without high-velocity airflow are both done in the system. Significant distinctions showing the impact on corona discharge of high-velocity airflow is observed.

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17

Wang, Chuang, Xi Chen, Jiting Ouyang, Tie Li, and Jialu Fu. "Pulse Current of Multi-Needle Negative Corona Discharge and Its Electromagnetic Radiation Characteristics." Energies 11, no. 11 (November 12, 2018): 3120. http://dx.doi.org/10.3390/en11113120.

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Negative corona discharge occurs widely in high voltage transmission lines and other “high voltage” uses, which can cause strong electromagnetic interference (EMI). In this research, the pulse current of multi-needle negative corona discharge and its electromagnetic (EM) radiation characteristics were studied and compared with that of single-needle negative corona discharge. A dipole radiation model was established to analyze the EM radiation characteristics of the negative corona discharge. The results show that the Trichel pulse discharge process of one discharge needle in multi-needle discharge structure will inhibit the discharge of the other discharge needles. It is only when the voltage reaches a certain threshold will the current and EM radiation fields of multi-needle discharge structure with a significant increasing of amolitude. The frequency of EM radiation of negative corona discharge is not affected by the number of needles, but is only related to ambient air pressure. This research provides a basis for detecting corona discharge sources in different conditions.

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18

Zou, Liang, Xiu Qun Zhang, Xin Hua Zhao, Chun Tian, and Hui Duan. "Influence of Corona Discharge on SAW Temperature Measurement System." Advanced Materials Research 1070-1072 (December 2014): 1167–70. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.1167.

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In order to study the electromagnetic interference on SAW (surface acoustic wave) wireless temperature measurement system of the corona discharge, the paper analyzes the characteristics of the frequency spectrum of corona discharge, models the corona discharge and studies its radiation characteristics by simulation on Matlab. Based on this, the experimental platforms of corona discharge is set up. The result of the experiment confirms that corona discharge causes electromagnetic interference to the system and the influence decreases as the distance between the sensor and discharge sources increase. Then the sensor should be kept a certain distance from the discharge sources.

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19

Chao, Yei-Chin, Tzu-Wei Chang, and Yu-Pei Chan. "The Reattachment Process of a Lifted Jet Diffusion Flame by Repetitive DC Pulse Discharges." Processes 9, no. 3 (March 17, 2021): 534. http://dx.doi.org/10.3390/pr9030534.

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On research of plasma assisted combustion, effects of electric and plasma discharges in DC, AC and pulse forms on reattachment of a lifted flame have attracted extensive attention. However, the detailed plasma assisted reattachment process and mechanism and roles of induced corona discharge and corona-induced ozone on the reattachment process are still unclear and undocumented. The forced reattachment process of a lifted diffusion jet flame by repetitive DC electric pulse discharges was experimentally investigated in this study using high-speed flame imaging, conditioned particle image velocimetry (PIV), and planar ozone concentration imaging. The forced reattachment process can be divided into three stages in sequence: ionic wind prior to corona initiation, corona initiation, and corona enhancement propagation. The conditioned PIV results showed that the instantaneous flame base propagation velocity is sufficiently enhanced beyond the laminar burning velocity for high pulse-repetition-frequency (PRF) cases at the instant of pulse discharge (on pulse) due to the enhanced oxidation of the corona induced ozone. By observing the dynamic flame-base behavior and evolution characteristics of the short-lived corona induced ozone for various PRFs, the novel forced reattachment process and mechanism of a lifted jet flame induced by repetitive DC electric pulse discharges is proposed.

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20

SETTAOUTI, A., and L. SETTAOUTI. "MONTE CARLO SIMULATION OF POSITIVE CORONA DISCHARGE IN NITROGEN." International Journal of Modern Physics C 21, no. 07 (July 2010): 943–54. http://dx.doi.org/10.1142/s0129183110015609.

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The corona discharge commonly occurs in many engineering devices and processes. Their application is still largely based on empirical knowledge; accordingly it is very important to predict the physical properties of corona discharge by the appropriate numerical method. To control corona discharge properly by understanding of corona discharge properties at different discharge stages, time-varying characteristics of discharge which are resulted from electron collision with the gas molecules should be investigated. A numerical study of a corona discharge in nitrogen in a point to plane geometry is presented. It is obtained by Monte Carlo method and concerns space-time evolution of electron and ion densities as well as electric field distributions along the discharge axis.

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21

Bologa, M. K., F. P. Grosu, V. D. Shkilev, I. V. Kozhevnikov, and A. A. Polikarpov. "A corona-discharge dipole engine." Surface Engineering and Applied Electrochemistry 51, no. 4 (June 2015): 401–5. http://dx.doi.org/10.3103/s106837551504002x.

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22

TANAKA, Yuki, Yuma KUSAKABE, Wakana TSURU, Kotaro SATO, and Kazuhiko YOKOTA. "Fluid Transport by Corona Discharge." Proceedings of Conference of Kanto Branch 2019.25 (2019): 18B11. http://dx.doi.org/10.1299/jsmekanto.2019.25.18b11.

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23

Bychkov, Vladimir L., Adliya R. Bikmukhametova, Vladimir A. Chernikov, Kirill I. Deshko, Tamara O. Mikhailovskaya, and Alexander P. Shvarov. "Corona Discharge Influence on Soil." IEEE Transactions on Plasma Science 48, no. 2 (February 2020): 350–54. http://dx.doi.org/10.1109/tps.2019.2960230.

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24

Jiang, Nan, Lei Gao, Ailing Ji, and Zexian Cao. "Helium corona-assisted air discharge." Journal of Applied Physics 110, no. 8 (October 15, 2011): 083301. http://dx.doi.org/10.1063/1.3651600.

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25

Sutherland, I., R. P. Popat, D. M. Brewis, and R. Calder. "Corona Discharge Treatment of Polyolefins." Journal of Adhesion 46, no. 1-4 (September 1994): 79–88. http://dx.doi.org/10.1080/00218469408026651.

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26

Bychkov, Vladimir L., Vladimir A. Chernikov, Sergey A. Volkov, Dmitry V. Bychkov, and Andrey A. Kostiuk. "Multielectrode Corona Discharge Over Liquids." IEEE Transactions on Plasma Science 39, no. 11 (November 2011): 2642–43. http://dx.doi.org/10.1109/tps.2011.2161339.

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27

Navarro-González, Rafael, and Sandra I. Ramírez. "Corona discharge of Titan's troposphere." Advances in Space Research 19, no. 7 (January 1997): 1121–33. http://dx.doi.org/10.1016/s0273-1177(97)00361-x.

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28

Mokhtari, Z., S. Holé, and J. Lewiner. "Smoke triggered corona discharge sensor." Journal of Electrostatics 71, no. 4 (August 2013): 769–72. http://dx.doi.org/10.1016/j.elstat.2013.05.005.

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29

SAITO, SHINJI. "Surface Modification by Corona Discharge." NIPPON GOMU KYOKAISHI 70, no. 6 (1997): 333–39. http://dx.doi.org/10.2324/gomu.70.333.

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30

Hamana, Nobuhiko, Tetsu Miyamoto, Teruyuki Miyazato, and Keiichi Takasugi. "Corona-Triggering Surface Discharge Switch." Japanese Journal of Applied Physics 35, Part 1, No. 1A (January 15, 1996): 259–65. http://dx.doi.org/10.1143/jjap.35.259.

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31

Sacks, H. K., and T. Novak. "Corona-Discharge-Initiated Mine Explosions." IEEE Transactions on Industry Applications 41, no. 5 (September 2005): 1316–22. http://dx.doi.org/10.1109/tia.2005.853387.

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32

Milardovich, N., M. Ferreyra, J. C. Chamorro, and L. Prevosto. "DISCHARGES IN CONTACT WITH LIQUIDS: ELECTRICAL CHARACTERIZATION OFA PULSED CORONA DISCHARGE." Anales AFA 33, Fluidos (August 16, 2022): 6–10. http://dx.doi.org/10.31527/analesafa.2021.33.fluidos.6.

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The large number of works published in recent years on non-thermal discharges in (and in contact with) liquids, shows the growing interest in this particular field of electric discharges due to the large number of technological applications. In particular, one of the fastest growing emerging applications is the treatment of water, both for its purification and for its activation, with a view to carrying out the indirect treatment of food and seeds with non-thermal discharges; without the addition of chemicals. In this work, the experimental characterization of a corona discharge in contact with water operating in a pulsed regime is presented. A flat-wire type geometry was used with the flat electrode immersed in water. The discharge was powered through a pulsed capacitive type source, capable of providing a periodic train ofhigh voltage pulses (∼15 kV) with short duration (∼100 ns), with a repetition frequency of 40 pulses/s. The results of discharge voltage and current measurements are reported and discussed for different operating conditions, and the instantaneous power and energy dissipated in the generated plasma are inferred. Photographs in the visible with long exposure times of the pulsed discharge are also shown

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33

Ri, Na, and Guo Rong Li. "Effect of the Corona Discharge on ZnTe Film." Advanced Materials Research 314-316 (August 2011): 171–75. http://dx.doi.org/10.4028/www.scientific.net/amr.314-316.171.

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The effect of corona electric field on the surface of Pr-doped ZnTe thin film was studied. The device which can produce the high-voltage corona electric field is developed and used. The V-A characteristics of positive and negative corona discharge between the adjacent needle plates were measured. Whether positive or negative corona discharge, the corona discharge current of the plate is increased with the applied voltage increasing; the voltage range of negative corona discharge is wider than that of the positive corona discharge, meanwhile under the same applied voltage, the negative corona discharge current is bigger, not only its curve is smooth, but also its discharge is stable. The thermal effect of electric field is small. The electric field strength is 7.0 kV•cm-1. By atomic force microscope, it is found that the size of particles becomes large and uniform, and the surface becomes rough with electric field treatment. The measurement results reveal that the average radius of particles is 108.70nm before the effect and 227.27nm after the effect. By UV-Vis Spectrophotometer, it is found that a strong optical absorption peak appears at the region of 220 - 250nm with electric field treatment. This means that the stronger light absorption peak turn out a blue shift under the effect of electric field. The phenomenon of the blue shift proves that the high-voltage corona electric field has an impact on the band gap of the film. The voltage range of the negative corona discharge is wide and stable. The thermal effect produced by the high-voltage corona electric field on the sample is very small, so usually it can be ignored. The high-voltage corona electric field can change the surface morphology of some films, makes the current density of the sample location increase in a small cross section. The negative high-voltage corona discharge should well be used to research in biophysics such as the transgenic plants. High-voltage corona discharge mutagenesis has become a new physical mutation technique. Introduction

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Wang, Disheng, Lin Du, and Chenguo Yao. "Statistical Study on Space Charge effects and Stage Characteristics of Needle-Plate Corona Discharge under DC Voltage." Energies 12, no. 14 (July 17, 2019): 2732. http://dx.doi.org/10.3390/en12142732.

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The air’s partial discharges (PD) under DC voltage are obviously affected by space charges. Discharge pulse parameters have statistical regularity, which can be applied to analyze the space charge effects and discharge characteristics during the discharge process. Paper studies air corona discharge under DC voltage with needle-plate model. Statistical rules of repetition rate (n), amplitude (V) and interval time (∆t) are extracted, and corresponding space charge effects and electric field distributions in PD process are analyzed. The discharge stages of corona discharge under DC voltage are divided. Furthermore, reflected space charge effects, electric field distributions and discharge characteristics of each stages are summarized to better explain the stage discharge mechanism. This research verifies that microcosmic process of PD under DC voltage can be described based on statistical method. It contributes to the microcosmic illustration of gas PD with space charges.

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35

Guo, Xiufeng, Qilin Zhang, and Jinbo Zhang. "Improvement of Corona Discharge Model and Its Application on Simulating Corona Discharge in the Presence of Wind." Mathematical Problems in Engineering 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/9853439.

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To evaluate the effect of wind on corona discharges occurring on the tip of a grounded rod during a negative charging process of thundercloud, a two-dimensional numerical model has been improved by considering the wind velocity as a driving force for the movement of the corona charges. It was found that not only wind speed but also wind direction have a significant effect on the distribution of corona charges, the local electric field around the rod, and the corona current. (1) Under the same wind speed, a larger horizontal wind can result in less accumulation of corona charges, a larger electric field, and a larger corona current. However, when the speed is less than 5 m s−1, the effect of wind direction on the corona current was weak. (2) Under the same wind direction, a larger wind speed can cause a larger corona current. However, when the horizontal wind component is smaller than the vertical, the larger wind speed would cause a smaller electric field. Thus, it is necessary to take the effects of the wind direction into consideration, rather than to consider its speed only, when studying the corona discharge and its effects on the upward leader.

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36

Zhu, Li, Shang He Liu, Shuai Xu, and Xiao Yong Lei. "Modeling and Calculation of the Sharp Conductor Structure of Corona Discharge." Applied Mechanics and Materials 336-338 (July 2013): 1485–89. http://dx.doi.org/10.4028/www.scientific.net/amm.336-338.1485.

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In order to study the corona discharge on the sharp conductor structure, the relationship between conductor radius and corona was found by analysis of the three basic structures of corona discharge, and calculating the potential around the conductor in the three cases. Based on the three basic structures, the model of sharp conductor structure of corona discharge was established. Since of it, the threshold voltage of it could be easily calculated, which may provide supports for the further research on corona discharge on the sharp conductor structure.

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37

Guo, Xiufeng, Ling Zhang, Ziyu Ji, Yue Gao, Zhaoxia Wang, and Nian Zhao. "Three-Dimensional Simulation of Corona Discharge in a Double-Needle System during a Thunderstorm." Atmosphere 14, no. 5 (April 26, 2023): 789. http://dx.doi.org/10.3390/atmos14050789.

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The effect of corona discharge from buildings or structures on the surrounding atmospheric electric field is very important in the measurement of urban atmospheric electric fields and the early warning of lightning. However, most previous studies were focused on independent buildings, with little research on three-dimensional building groups. Therefore, based on three-dimensional numerical simulation technology, this paper uses a double-needle system to simulate the characteristics of thunderstorm corona discharge from two equal-height buildings separated by a variable distance. The shielding effect of the double-needle system on the ground electric field is evaluated both with and without corona discharge, and the main conclusions are as follows: (1) The larger the distance between the two needles, the closer the peak corona current from each tip of the double-needle system is to that from an independent lightning rod at the same height. When the peak corona current from each tip of the double-needle system equals the peak corona current from an independent lightning rod at the same height to some level of approximation, the distance between the two needle systems is determined by the needle height at this time. (2) If the distance between the two needles is 0.1 m, the corona charge released by the double-needle system is almost equal to that released by an independent lightning rod. The corona charge released by the double-needle system is approximately twice as much as that released by an independent lightning rod when the distance between the two needles is increased to a certain value that increases with the needle height and the time of corona discharge. (3) The greater the value of the time of corona discharge, the stronger the shielding effect of the corona discharge on the ground electric field and the larger the shielding range, but the greater the value of the needle height, the smaller the shielding range. (4) Compared with the shielding effect with no corona discharge, that with corona discharge is greater, but the greater the value of the needle height, the less the enhancement. For example, for corona discharge with a time of 10 s, the needle height is 20 m, and the shielding range is ca. 70 m, which is 8.8 times that without corona discharge; however, for the needle height of 100 m, the shielding range is ca. 150 m, which is only 1.5 times that without corona discharge.

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38

Flores, O., B. Campillo, F. Castillo, H. Martínez, and J. Colín. "Surface modification of polyethylene terephthalate (PET) by corona discharge plasma." Journal of Nuclear Physics, Material Sciences, Radiation and Applications 8, no. 2 (February 10, 2021): 129–34. http://dx.doi.org/10.15415/jnp.2021.82016.

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Surface modification of polyethylene terephthalate (PET) was studied by corona discharge plasma at different exposure times using air as working gas. The modification of the surface properties are characterized, those are morphology and wettability. Corona plasma treatment was found to modify the PET surface in both morphology and wettability. The corona discharge at atmospheric pressure is a heterogeneous with multiple current pulses, which generates an asymmetric pattern of erosion on the PET surface. The corona discharge treatment erodes the surface and therefore modifies the surface morphology. The roughness of the PET surface increases in the impact point of the corona discharge on the PET surface. An increase in the wettability of PET was also observed after corona discharge treatment at atmospheric pressure.

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Luo, Li, Qing Yang, Jin-Long Gong, and Yi-Fan Wang. "Corona Discharge Detection System Based on Ultraviolet Sensor and Optical Lens." Journal of Nanoelectronics and Optoelectronics 14, no. 12 (December 1, 2019): 1686–92. http://dx.doi.org/10.1166/jno.2019.2716.

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Ultraviolet radiation produced by corona discharge can be used for discharge diagnosis, but the ultraviolet imager is expensive and the ultraviolet signal is susceptible to external interference during the day, so it can not accurately identify the occurrence of corona discharge. In this paper, an optical lens is designed to collect ultraviolet signal. In this paper, a corona detection method based on ultraviolet sensor and optical lens was proposed. The design of optical lens to concentrate the ultraviolet signal so as to suppress external interference was presented. By carrying out insulator corona discharge experiments, the feasibility of the proposed method was studied. Finally, a comparison and verification was made with the combination of corona discharge images collected by UV imager. Research results by this paper indicate that, when the detection distance is smaller than 5 m, and the power supply is about 700 V, the proposed corona detection method can effectively collect the ultraviolet rays generated by corona discharge, thus realizing the feasible recognition of corona discharge. Moreover, this method can feasibly reflect the changing of UV intensity with applied voltage and detection distance. The research results can provide important reference for the development and calibration of ultraviolet detection equipment.

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KADONO, Teruki, Tetsuya KOBAYASHI, Koji YOSHIDA, and Hideo SHOJI. "An Influence of Corona Discharge on Premixed Flame Propagation : The Influence of Corona Discharge Condition." Proceedings of Conference of Kanto Branch 2002.8 (2002): 75–76. http://dx.doi.org/10.1299/jsmekanto.2002.8.75.

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41

Kireche, Nora, Sébastien Rondot, Ferroudja Bitam-Megherbi, Omar Jbara, Mickael Gilliot, and Jean-Marc Patat. "Experimental study of polymethyl methacrylate: damage under corona discharge." European Physical Journal Applied Physics 82, no. 3 (June 2018): 31301. http://dx.doi.org/10.1051/epjap/2018180073.

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In high-voltage applications, insulators may be exposed to corona discharges during long periods. In this experimental work, corona discharge tests of different durations are carried out in air at atmospheric pressure on polymethyl methacrylate (PMMA) samples. The resulting surface degradation is studied with several techniques. The surface damages are observed with environmental scanning electron microscope and atomic force microscopy. The results show that electrical trees occur on the surface of material and their distribution depends on the corona discharge duration. The chemical changes on PMMA surface are analyzed by Fourier transform infrared spectroscopy and a chemical degradation mechanism is proposed. Evolution of surface resistivity with corona aging is also implemented by using a classical I(V) method. In addition, to study the dielectric behavior of PMMA, the monitoring of kinetics of the trapped charge under electron irradiation in a scanning electron microscope is performed. The charging ability of PMMA under electron irradiation and its time constant of charging decrease with electrical aging.

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Kulumbaev, E. B., V. M. Lelevkin, I. A. Niyazaliev, and A. V. Tokarev. "Characteristics of a corona discharge with a hot corona electrode." Plasma Physics Reports 37, no. 8 (August 2011): 707–14. http://dx.doi.org/10.1134/s1063780x11060134.

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43

Jianfen Liu and G. R. G. Raju. "Simulation of corona discharge. Negative corona in SF/sub 6/." IEEE Transactions on Dielectrics and Electrical Insulation 1, no. 3 (June 1994): 520–29. http://dx.doi.org/10.1109/94.300296.

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Jianfen Liu and G. R. G. Raju. "Simulation of corona discharge. Positive corona in SF/sub 6/." IEEE Transactions on Dielectrics and Electrical Insulation 1, no. 3 (June 1994): 530–37. http://dx.doi.org/10.1109/94.300297.

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45

Pamungkas, Adityo, Ika Novia Anggraini, M. Khairul Amri Rosa, and Afriyastuti Herawati. "Aplikasi Lucutan Plasma Corona Dalam Pengolahan Limbah Cair Kelapa Sawit." JURNAL AMPLIFIER : JURNAL ILMIAH BIDANG TEKNIK ELEKTRO DAN KOMPUTER 10, no. 2 (November 30, 2020): 9–14. http://dx.doi.org/10.33369/jamplifier.v10i2.15313.

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ABSTRACT The green revolution in the field of palm oil farming not only contributes to processed products but also produces large-capacity waste originating from its processing starting from the sterilization process, water from the clarification process, hydro cyclone (clay bath) water, and factory washing water. Palm oil mill effluent (LCPKS) contains dissolved and suspended solids in the form of colloids and oil residues with high BOD and COD. If this liquid waste is discharged directly into the water, it can pollute the environment. Some will settle, decompose slowly, consume dissolved dcxdcoxygen, cause turbidity, emit a sharp odor and can damage the aquatic ecosystem. To improve the parameters in the LCPKS so that it is feasible to flow to water bodies or the environment, an LCPKS treatment experiment test is performed by applying corona discharge with variations in voltage and length of time, then comparing the effect on parameters such as BOD, COD, pH and TDS on LCPKS before treatment and after treatment. From the treatment process using a corona discharge application with variations in voltage and time able to reduce BOD levels up to 35%, COD 36%, increase in TDS reached 71.56% and decreased pH by 4.11%.Key words: Palm oil mill effluent (LCPKS), Corona discharge application (Corona Discharge Treatment), COD, BOD, TDS, pH

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Abdullah, Pirzheen O., and Sabah I. Waisy. "Dependence of inter-electrode gap separation on the Positive and Negative Pin-Grid Plasma Corona Discharge." Academic Journal of Nawroz University 9, no. 3 (June 24, 2020): 27. http://dx.doi.org/10.25007/ajnu.v9n3a701.

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In this work, both positive and negative corona discharge of pin-grid geometrical configuration was studied and the necessary modification of the general law of corona discharge was proposed. The current-voltage measurements were performed at room temperature and at different inter electrode separations. The variation of dimensional constant K and corona inception voltage Vo with pin-grid separations S were subjected into the general law of corona discharge using the least square fitting method in Log-Log scale. The relationship between corona current and different voltage (V-Vo) was investigated to find the acceptable value of exponent n. The least square fitting for all variations of corona parameters was based on the highest R-square value of obtained straight lines for individual measurements. It was found that value of exponent n for both polarities is larger compared to the empirical formula proposed previously for the general law of corona discharge.

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V. S. Sawant, V. S. Sawant. "Experimental Studies on Corona Discharge Ionization." IOSR Journal of Applied Physics 3, no. 2 (2013): 11–15. http://dx.doi.org/10.9790/4861-0321115.

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Grosu, F. P., M. K. Bologa, O. V. Motorin, I. V. Kozhevnikov, and A. A. Polikarpov. "Physical Peculiarities of Corona-Discharge Motors." Surface Engineering and Applied Electrochemistry 54, no. 6 (November 2018): 585–92. http://dx.doi.org/10.3103/s1068375518060042.

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Palagushkin, A. N., S. A. Prokopenko, and A. P. Sergeev. "SPR gas sensor with corona discharge." Optical Memory and Neural Networks 24, no. 1 (January 2015): 1–7. http://dx.doi.org/10.3103/s1060992x1501004x.

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Béquin, Ph, V. Joly, and Ph Herzog. "Modeling of a corona discharge microphone." Journal of Physics D: Applied Physics 46, no. 17 (April 11, 2013): 175204. http://dx.doi.org/10.1088/0022-3727/46/17/175204.

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