| Autor: |
Montijn, C., Ebert, U., Hundsdorfer, W., Veldhuizen, van, E.M. |
| Přispěvatelé: |
Elementary Processes in Gas Discharges |
| Jazyk: |
angličtina |
| Rok vydání: |
2005 |
| Zdroj: |
Proceedings of the 27th International Conference on Phenomena in Ionised Gases (XXVII ICPIG 2005) 17-22 July 2005, Eindhoven, the Netherlands |
| Popis: |
A local uniform grid refinement strategy is implemented for the simulation of negative anode-directed streamers. The results are shown for an undervolted gap filled with nitrogen at 300 K, with a uniform background electric field of 30 kV/cm. The build up of space charge during the electron avalanche is sped up by a net inflow of electrons at the cathode. The streamer then propagates in the self-induced field enhancement of the space charge layer. Eventually, the streamer branches. The results are compared to those in an overvolted gap (background field of 100 kV/cm). In this case the propagation has the same qualitative features as in the undervolted gap, but the streamer velocity is a factor four larger, while the time to branching is sped up with roughly a factor hundred |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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