Academic Journal
3D modelling of self-organized patterns of spots on anodes of DC glow discharge
| Title: | 3D modelling of self-organized patterns of spots on anodes of DC glow discharge |
|---|---|
| Authors: | Bieniek, M. S., Almeida, P. G. C., Benilov, M. S. |
| Publication Year: | 2018 |
| Collection: | ArXiv.org (Cornell University Library) |
| Subject Terms: | Physics - Plasma Physics |
| Description: | Self-organized patterns of spots on a at metallic anode in a cylindrical glow dis- charge tube are simulated self-consistently. A standard model of a glow discharge is used, comprising conservation and transport equations for a single species of ion and electrons, written with the use of the drift-diffusion and local-field approximations, and the Poisson equation. The computation domain is the region from the anode to the discharge column; only processes in the near-anode region are considered. Multiple solutions, existing in the same range of discharge current and describing modes with and without anode spots, are computed by means of a stationary solver. The computed spots exhibited unexpected behavior. A reversal of the local anode current density in the middle of each of the spots was found, i.e. mini-cathodes are formed inside the spots. The solutions do not fit into the conventional pattern of self-organization in bistable nonlinear dissipative systems; e.g. the modes are not joined by bifurcations. |
| Document Type: | text |
| Language: | unknown |
| Relation: | http://arxiv.org/abs/1802.07659 |
| DOI: | 10.1088/1361-6595/aac0e9 |
| Availability: | https://doi.org/10.1088/1361-6595/aac0e9 http://arxiv.org/abs/1802.07659 |
| Accession Number: | edsbas.8DC50D22 |
| Database: | BASE |
| Description not available. |