Kinetic phenomena in electron transport in radio-frequency fields

Petrović, Zoran Lj.; Raspopović, Z.; Dujko, Sasa; Makabe, Toshiaki

doi:10.1016/s0169-4332(02)00018-1

Cited by 80 publications

(76 citation statements)

References 184 publications

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“…According to arguments given in [18], the leading edge of an ionization front has essentially the same dynamics and therefore also the same energy slope as an electron swarm. In the past, many swarm-oriented studies have been performed to explore the effects of spatial variation of the average energy through the swarm and many phenomena have been discovered [34,[44][45][46]. Almost certainly, one of the most striking phenomena is the difference between the flux and the bulk transport data which follows directly from spatially dependent non-conservative collisions (ionization and/or electron attachment) resulting from a spatial variation of average electron energies within the swarm [34,44,47,48].…”

Section: Electron Energy Profiles In Different Front Regions Within Tmentioning

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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Section: Electron Energy Profiles In Different Front Regions Within Tmentioning

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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“…We observe that it has all the features of anomalous diffusion [3] but perhaps the most striking phenomena is the presence of negative transiently diffusivity in the limit of the highest B 0 /n 0 of 2000 Hx (1Hx = 10 −27 Tm 3 ). These results independently confirm the previous calculations and the reader is referred to [14] for details.…”

Section: The Effects Of the Magnetic Field Strengthmentioning

confidence: 74%

“…[2,7]. [2,3]. We try to complement these previous publications by a comprehensive description of electron transport for the most general case of arbitrary field orientations and phase differences between the fields.…”

Section: Spherical Harmonics Decomposition Of the Boltzmann Equationmentioning

confidence: 99%

“…The history with respect to various aspects of charged particle transport processes in electric and magnetic fields and techniques for solving the Boltzmann equation has been recently reviewed [2,3]. In contrast to the extensive literature on charged particle swarms in dc electric and magnetic fields, until recently very little has been carried over to charged particle swarms in ac electric and magnetic fields.…”

Section: Introductionmentioning

confidence: 99%

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A multi term Boltzmann equation analysis of non-conservative electron transport in time-dependent electric and magnetic fields

Dujko

White

2008

J. Phys.: Conf. Ser.

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“…Our Monte Carlo simulation code, which had been described in great details elsewhere (Bzenic´et al, 1999;Petrovic´et al, 2002;Dujko et al, 2005), was used to calculate the vibrational excitation rate coefficients. We followed the spatiotemporal evolution of each electron through time steps in order to represent correctly the motion of electrons in external RF fields.…”

Section: Calculation Techniquementioning

confidence: 99%