281 citations
- University of AmsterdamNL21 papers
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13 papers · 1 filter
3D hybrid computations for streamer discharges and production of run-away electrons
Chao Li, Ute Ebert, Willem Hundsdorfer
We introduce a 3D hybrid model for streamer discharges that follows the dynamics of single electrons in the region with strong field enhancement at the streamer tip while approxima…
Streamers, sprites, leaders, lightning: from micro- to macroscales
Ute Ebert, Davis D. Sentman
"Streamers, sprites, leaders, lightning: from micro- to macroscales" was the theme of a workshop in October 2007 in Leiden, The Netherlands; it brought researchers from plasma phys…
Moving boundary approximation for curved streamer ionization fronts: Solvability analysis
Fabian Brau, Benny Davidovitch, Ute Ebert
The minimal density model for negative streamer ionization fronts is investigated. An earlier moving boundary approximation for this model consisted of a "kinetic undercooling" typ…
Positive and negative streamers in ambient air: measuring diameter, velocity and dissipated energy
T. M. P. Briels, J. Kos, G. J. J. Winands +2
Positive and negative streamers are studied in ambient air at 1 bar; they emerge from a needle electrode placed 40 mm above a planar electrode. The amplitudes of the applied voltag…
Positive streamers in air and nitrogen of varying density: experiments on similarity laws
T. M. P. Briels, E. M. van Veldhuizen, Ute Ebert
Positive streamers in ambient air at pressures from 0.013 to 1 bar are investigated experimentally. The voltage applied to the anode needle ranges from 5 to 45 kV, the discharge ga…
Positive and negative streamers in ambient air: modeling evolution and velocities
Alejandro Luque, Valeria Ratushnaya, Ute Ebert
We simulate short positive and negative streamers in air at standard temperature and pressure. They evolve in homogeneous electric fields or emerge from needle electrodes with volt…