Evaluation of pulsed streamer corona experiments to determine the O<sup>*</sup>radical yield

Heesch, van Ejm Bert; Winands, Gjj Hans; Pemen, Ajm Guus

doi:10.1088/0022-3727/41/23/234015

Cited by 72 publications

(79 citation statements)

References 7 publications

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“…Now we can apply the theory for hyperbolic systems of balance laws [41][42][43] to our system (7)- (9). The matrix A(u) has four eigenvalues:…”

Section: D Hyperbolic System Of Balance Lawsmentioning

confidence: 99%

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High-order fluid model for streamer discharges: II. Numerical solution and investigation of planar fronts

Markosyan¹,

Dujko²,

Ebert³

2013

J. Phys. D: Appl. Phys.

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The high-order fluid model developed in part I of this series is employed here to study the propagation of negative planar streamer fronts in pure nitrogen. The model consists of the balance equations for electron density, average electron velocity, average electron energy and average electron energy flux. These balance equations have been obtained as velocity moments of Boltzmann's equation and are here coupled to the Poisson equation for the space charge electric field. Here the results of simulations with the high-order model, with a particle-in-cell/Monte Carlo (PIC/MC) model and with the first-order fluid model based on the hydrodynamic drift-diffusion approximation are presented and compared. The comparison with the MC model clearly validates our high-order fluid model, thus supporting its correct theoretical derivation and numerical implementation. The results of the first-order fluid model with local field approximation, as usually used for streamer discharges, show considerable deviations. Furthermore, we study the inaccuracies of simulation results caused by an inconsistent implementation of transport data into our high-order fluid model. We also demonstrate the importance of the energy flux term in the high-order model by comparing with results where this term is neglected. Finally, results with an approximation for the high-order tensor in the energy flux equation is found to agree well with the PIC/MC results for reduced electric fields up to 1000 Townsend, as considered in this work.

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“…Now we can apply the theory for hyperbolic systems of balance laws [41][42][43] to our system (7)- (9). The matrix A(u) has four eigenvalues:…”

Section: D Hyperbolic System Of Balance Lawsmentioning

confidence: 99%

“…Streamers occur in lightning and sprites [1][2][3][4]17] as well as in industrial applications such as lighting [5][6][7], treatment of polluted gases and water [8], disinfection [9], plasma jets and bullets [10][11][12][13][14] and plasma-assisted combustion [15,16].…”

Section: Introductionmentioning

confidence: 99%

High-order fluid model for streamer discharges: II. Numerical solution and investigation of planar fronts

Markosyan¹,

Dujko²,

Ebert³

2013

J. Phys. D: Appl. Phys.

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“…From these measurements, the yields of O radicals can by calculated by means of a detailed kinetic model. This method is described in detail by Peyrous [12] and van Heesch et al [8]. For this model, 71 chemical reactions, involving 17 species, were used.…”

Section: Chemical Modelmentioning

confidence: 99%

“…Such gas cleaning applications are mainly initiated by the radicals that are produced by the corona plasma, such as O and OH. In [8], we reported that the yields of O radicals produced by corona plasma in air can be very high (in the range of 3-7 mol/kWh). However, to be competitive, the high costs of the pulsedpower technology are still a major hurdle.…”

Section: Introductionmentioning

confidence: 99%

AC/DC/Pulsed-Power Modulator for Corona-Plasma Generation

Ariaans

Pemen

Winands³

et al. 2009

IEEE Trans. Plasma Sci.

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Abstract-Gas-cleaning techniques using nonthermal plasma are slowly introduced into industry nowadays. In this paper, we present a novel power modulator for the efficient generation of large-volume corona plasma. No expensive high-voltage components are required. Switching is done at an intermediate voltage level of 1 kV with standard thyristors. Detailed investigations on the modulator and a wire-plate corona reactor will be presented. In a systematic way, modulator parameters have been varied. Furthermore, reactor parameters, such as the number of electrodes and the electrode-plate distance, have been varied systematically. The yield of O radicals was determined from the measured ozone concentrations at the exhaust of the reactor.

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“…[20][21][22][23][24][25][26][27] Overall, researches have noted that the pulse duration of the applied high-voltage pulse has a significant influence on the radical yield of the transient plasmas generated with these pulses; shorter pulses result in higher yields. [20][21][22]26 To study and understand this phenomenon, we developed a nanosecond pulse source that produces even shorter and faster pulses than realized by other research groups. The output pulses from this nanosecond pulse source have an adjustable amplitude of up to 50 kV (positive and negative), an adjustable pulse duration of 0.5-10 ns, and a rise time of less than 200 ps.…”

Section: Introductionmentioning

confidence: 99%

Experimental setup for temporally and spatially resolved ICCD imaging of (sub)nanosecond streamer plasma

Huiskamp

Sengers

Pemen

2016

Review of Scientific Instruments

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Streamer discharges are efficient non-thermal plasmas for air purification and can be generated in wire-cylinder electrode structures (the plasma reactor). When (sub)nanosecond high-voltage pulses are used to generate the plasma, components like a plasma reactor behave as transmission lines, where transmission times and reflections become important. We want to visually study the influence of these transmission-line effects on the streamer development in the reactor. Therefore, we need a unique experimental setup, which allows us to image the streamers with nanosecond time resolution over the entire length of the plasma reactor. This paper describes the setup we developed for this purpose. The setup consists of a large frame in which a specially designed plasma reactor can be mounted and imaged from below by an intensified charge-coupled device (ICCD) camera. This camera is mounted on a platform which can be moved by a stepper motor. A computer automates all the experiments and controls the camera movement, camera settings, and the nanosecond high-voltage pulse source we use for the experiments. With the automated setup, we can make ICCD images of the entire plasma reactor at different instances of time with nanosecond resolution (with a jitter of less than several hundreds of picoseconds). Consequently, parameters such as the streamer length and width can be calculated automatically.

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Evaluation of pulsed streamer corona experiments to determine the O^*radical yield

Cited by 72 publications

References 7 publications

High-order fluid model for streamer discharges: II. Numerical solution and investigation of planar fronts

High-order fluid model for streamer discharges: II. Numerical solution and investigation of planar fronts

AC/DC/Pulsed-Power Modulator for Corona-Plasma Generation

Experimental setup for temporally and spatially resolved ICCD imaging of (sub)nanosecond streamer plasma

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Evaluation of pulsed streamer corona experiments to determine the O*radical yield

Cited by 72 publications

References 7 publications

High-order fluid model for streamer discharges: II. Numerical solution and investigation of planar fronts

High-order fluid model for streamer discharges: II. Numerical solution and investigation of planar fronts

AC/DC/Pulsed-Power Modulator for Corona-Plasma Generation

Experimental setup for temporally and spatially resolved ICCD imaging of (sub)nanosecond streamer plasma

Contact Info

Product

Resources

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Evaluation of pulsed streamer corona experiments to determine the O^*radical yield