| Autor: |
Douglas W. Potter, Mary K. Hudson |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
Physics of Auroral Arc Formation |
| DOI: |
10.1029/gm025p0260 |
| Popis: |
A 1d unmagnetized double layer simulation is presented along with analytic considerations of the Langmuir-Bohm criterion for double layer formation. It is found that this requirement of large electron drift is not reduced by trapped thermal electron and ion populations; the assumption of a nonthermal population which requires the preexistence of the double layer cannot reduce the required electron drift. It is noted that negative charge density spikes and holes in ion phase space accompany the double layer. A magnetized BGK mode solution to Poisson's equation for the potential profile perpendicular to B for cold counter-streaming electrons and ions shows how the spatial structure changes in a magnetized plasma. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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