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Determination of electrical characteristics of nanosecond discharge in liquid

Published on Jun 25, 2017 in ICDL (International Conference on Dielectric Liquids)
· DOI :10.1109/ICDL.2017.8124686
V. Babicky9
Estimated H-index: 9
,
Martin Clupek16
Estimated H-index: 16
,
Petr Lukes21
Estimated H-index: 21
Abstract
Method of determining nanosecond pulse parameters and energy deposited to the nanosecond discharge in liquids using back current shunt mounted in the middle of the supply coaxial cable is presented. A simple simulation of the discharge chamber circuit with respect to the parasitic impedances was performed for better understanding of the shape of the reflected pulse and to verify limitations of this method.
  • References (9)
  • Citations (3)
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References9
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#1Pj Peter Bruggeman (UMN: University of Minnesota)H-Index: 37
#2Mark J. Kushner (UM: University of Michigan)H-Index: 55
Last. G. Zvereva (SPbU: Saint Petersburg State University)H-Index: 1
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Plasma–liquid interactions represent a growing interdisciplinary area of research involving plasma science, fluid dynamics, heat and mass transfer, photolysis, multiphase chemistry and aerosol science. This review provides an assessment of the state-of-the-art of this multidisciplinary area and identifies the key research challenges. The developments in diagnostics, modeling and further extensions of cross section and reaction rate databases that are necessary to address these challenges are dis...
317 CitationsSource
In this paper we investigate the energy transfer from the pulses of a (sub)nanosecond pulse source to the plasma in a corona-plasma reactor. This energy transfer (or 'matching') should be as high as possible. We studied the effect of multiple parameters on matching, such as the reactor configuration, the pulse duration and amplitude and the energy density. The pulse reflection on the reactor interface has a significant influence on matching, and should be as low as possible to transfer the most ...
6 CitationsSource
#1T Tom Huiskamp (TU/e: Eindhoven University of Technology)H-Index: 8
#2F. J. C. M. Beckers (TU/e: Eindhoven University of Technology)H-Index: 6
Last. A.J.M. Pemen (TU/e: Eindhoven University of Technology)H-Index: 12
view all 4 authors...
In this paper, we present a large-bandwidth, high-current, and high-voltage measuring system for pulse measurements in pulsed power systems. The developed sensors can be easily calibrated, require no extensive (3-D) modeling, are very compact, are inexpensive, and have a bandwidth of up to several gigahertz. Moreover, they can be used in any pulsed power system, where a pulse source is connected to its load by a coaxial cable (without disturbing the coaxial geometry). We developed this sensor sy...
10 CitationsSource
#1Ilya MarinovH-Index: 3
Last. Antoine RousseauH-Index: 20
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A positive discharge in water is generated by applying a 30 ns high-voltage (HV) pulse on a micrometre scale electrode. The applied voltage ranges from 6 to 15 kV and a fast plasma propagating mode is launched with a velocity of up to 60 km s−1. Time-resolved shadowgraphy and spectroscopy are performed to monitor the time evolution of the discharge structure and of the plasma emission spectra. By analysing the dynamics of the shock front velocity and the lateral expansion of the plasma channel, ...
20 CitationsSource
#1Yohan Seepersad (Drexel University)H-Index: 6
#2M. S. Pekker (Drexel University)H-Index: 17
Last. Danil Dobrynin (Drexel University)H-Index: 18
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This work investigates the development of nanosecond pulsed discharges in water ignited with the application of both positive and negative polarity pulses to submerged pin-to-plane electrodes. Optical diagnostics are used to study two main aspects of these discharges: the initiation phase, and the development phase. Nanosecond pulses up to 24 kV with 4 ns rise time, 10 ns duration and 5 ns fall time are used to ignite discharges in a 1.5 mm gap between a copper plate and a tungsten needle with r...
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#1Danil Dobrynin (Drexel University)H-Index: 18
#2Yohan Seepersad (Drexel University)H-Index: 6
Last. Alexander Fridman (Drexel University)H-Index: 51
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In this paper we report the results on study of the non-equilibrium nanosecond discharge generation in liquid media. Here we studied the discharge in both water and silicon transformer oil, and present our findings on discharge behaviour depending on global (applied) electric, discharge emission spectrum and shadow imaging of the discharge. We also discuss possible scenarios of non-equilibrium nanosecond discharge development and suggest that the discharge operates in a leader-type regime suppor...
44 CitationsSource
The dynamics of pulsed nanosecond discharge development in liquid water, ethanol and hexane were investigated experimentally. High-voltage pulses with durations of 20 and 60 ns and amplitudes of 6–60 kV were used for discharge initiation. It is shown that the dynamics of discharge formation fundamentally differ between liquids with low and high dielectric permittivity coefficients. In water (high permittivity), two phases were observed in the process of discharge development. The first phase is ...
35 CitationsSource
#1Bruce R. LockeH-Index: 41
#2M. SatoH-Index: 1
Last. J.-S. ChangH-Index: 1
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The application of strong electric fields in water and organic liquids has been studied for several years, because of its importance in electrical transmission processes and its practical applications in biology, chemistry, and electrochemistry. More recently, liquid-phase electrical discharge reactors have been investigated, and are being developed, for many environmental applications, including drinking water and wastewater treatment, as well as, potentially, for environmentally benign chemica...
657 CitationsSource
Pulse positive streamer corona discharges in water solution with a different conductivity have been investigated in reactors with the needle-plate and coaxial electrode geometry. A special composite anode was used in the coaxial geometry. With such an anode hundreds of streamers were generated at each voltage pulse. Production of H, O and OH radicals by the discharge was proved by emission spectroscopy and formation of H2O2 and degradation of phenol was demonstrated by chemical methods. Assuming...
277 CitationsSource
Cited By3
Newest
#1Branislav PongrácH-Index: 6
#2Milan SimekH-Index: 17
Last. Petr LukesH-Index: 21
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Basic emission fingerprints of nanosecond discharges produced in deionized water by fast rise-time positive high-voltage pulses (duration of 6 ns and amplitude of +100 kV) in a point-to-plane electrode geometry were investigated by means of time-resolved intensified charge-coupled device (ICCD) spectroscopy. Time-resolved emission spectra were measured via ICCD kinetic series during the discharge ignition and later phases over the 350–850 nm spectral range with fixed, either 3 ns or 30 ns, acqui...
5 CitationsSource
Jun 25, 2017 in ICDL (International Conference on Dielectric Liquids)
#1Petr LukesH-Index: 21
#2Martin ClupekH-Index: 16
Last. Milan SimekH-Index: 17
view all 5 authors...
We have evaluated chemical activity of the nanosecond discharge in bulk liquid water by measuring the plasmachemical production of hydrogen peroxide and oxidation of phenol used as chemical probe of OH radicals. Nanosecond pulse generator was used as a source of high voltage pulses (6 ns FWHM) with adjustable amplitude of the positive polarity (60–110 kV) and pulse energy 50–150 mJ/pulse. Obtained results gave clear evidence about the plasmachemical production of OH radicals by nanosecond discha...
Source
Jun 1, 2017 in ICDL (International Conference on Dielectric Liquids)
#1Branislav PongrácH-Index: 6
#2Milan SimekH-Index: 17
Last. Petr LukesH-Index: 21
view all 5 authors...
Basic morphologic structure and emission fingerprints of micro-discharges produced in deionized water by short high voltage pulses (duration of 6 ns and amplitude of + 100 kV) are presented. Time-resolved ICCD images evidence typical streamer-like branched filamentary structure of the discharge with propagation velocity 2–4×105 m/s. Emission spectra show a broad-band continuum evolving during the first few nanoseconds followed by the well-known HI/OI atomic lines. The electron densities were est...
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