The Role of Metastables in the Formation of an Argon Discharge in a Two-Pin Geometry

Sobota, Ana; Manders, F Freddy; Veldhuizen, E.M. van; Dijk, Jan van; Haverlag, M Marco

doi:10.1109/tps.2010.2056934

Cited by 22 publications

(15 citation statements)

References 26 publications

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“…Table 1 lists the reactions used in the simulations. In comparison with the fast development of the discharge in pulsed voltage mode, as described in [20], the development of the discharge we describe using these simulations is much slower (up to 100 µs compared to 150 ns in the pulsed mode). As a consequence of this prolonged simulation period, these simulations require a broader reaction list that includes the recombination processes as well, as given in table 1.…”

Section: System Under Considerationmentioning

confidence: 92%

“…This means that the dominant ion species have much lower mobility than expected from atomic ions. Reactions involving the atomic metastables may not play the main role in the breakdown chemistry, but we have already shown that even for fast breakdown processes, they do give a contribution that cannot be neglected [20]. The rest of the process list consists of four recombination and one deexcitation process.…”

Section: System Under Considerationmentioning

confidence: 99%

“…As far as lighting purposes are concerned, the extensions done for modelling of the ignition process in fluorescent tubes [24,25] were done by van Dijk and Brok. It was later used for the simulations of the breakdown process with fast-rising voltage in near-atmospheric pressure gas [20]. For this set of simulations, we took into account the transport of all heavy species except the neutral gas atoms and secondary electron emission from the electrode surfaces.…”

Section: Modelmentioning

confidence: 99%

“…As mentioned, the model we used for the simulations presented in this paper was already used and described in [20] in a somewhat simpler form for pulsed discharges in 0.7 bar argon in a pin-pin geometry. We will shortly restate the main principles in the following section.…”

Section: Fluid Modelmentioning

confidence: 99%

See 3 more Smart Citations

Ac breakdown in near-atmospheric pressure noble gases: II. Simulations

Sobota

Dijk

Haverlag

2011

J. Phys. D: Appl. Phys.

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Section: System Under Considerationmentioning

confidence: 92%

Section: System Under Considerationmentioning

confidence: 99%

Section: Modelmentioning

confidence: 99%

Section: Fluid Modelmentioning

confidence: 99%

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Ac breakdown in near-atmospheric pressure noble gases: II. Simulations

Sobota

Dijk

Haverlag

2011

J. Phys. D: Appl. Phys.

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“…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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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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