Plasma currents and electron distribution functions under a dc electric field of arbitrary strength
The currents induced by arbitrarily strong dc electric fields in plasma and the evolution of electron distributions have been studied by Fokker-Planck simulations. We find that the electron distributions evolve distinctly under different fields; especially, the electron distribution is well represen...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2008
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| _version_ | 1797058891231526912 |
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| author | Weng, S Sheng, Z He, M Zhang, J Norreys, P Sherlock, M Robinson, A |
| author_facet | Weng, S Sheng, Z He, M Zhang, J Norreys, P Sherlock, M Robinson, A |
| author_sort | Weng, S |
| collection | OXFORD |
| description | The currents induced by arbitrarily strong dc electric fields in plasma and the evolution of electron distributions have been studied by Fokker-Planck simulations. We find that the electron distributions evolve distinctly under different fields; especially, the electron distribution is well represented by the sum of a stationary and drifting Maxwellian at the moderate field. A set of hydrodynamiclike equations, similar to Spitzer's but without the weak-field limit, is given for calculating the current. It is more suitable for application in hybrid particle-in-cell simulations and may extend plasma transport theory in models that do not employ a kinetic description of the electrons. © 2008 The American Physical Society. |
| first_indexed | 2024-03-06T19:56:46Z |
| format | Journal article |
| id | oxford-uuid:25e08c30-b436-4ee6-9b01-8e061d218efd |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:56:46Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | oxford-uuid:25e08c30-b436-4ee6-9b01-8e061d218efd2022-03-26T11:57:58ZPlasma currents and electron distribution functions under a dc electric field of arbitrary strengthJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:25e08c30-b436-4ee6-9b01-8e061d218efdEnglishSymplectic Elements at Oxford2008Weng, SSheng, ZHe, MZhang, JNorreys, PSherlock, MRobinson, AThe currents induced by arbitrarily strong dc electric fields in plasma and the evolution of electron distributions have been studied by Fokker-Planck simulations. We find that the electron distributions evolve distinctly under different fields; especially, the electron distribution is well represented by the sum of a stationary and drifting Maxwellian at the moderate field. A set of hydrodynamiclike equations, similar to Spitzer's but without the weak-field limit, is given for calculating the current. It is more suitable for application in hybrid particle-in-cell simulations and may extend plasma transport theory in models that do not employ a kinetic description of the electrons. © 2008 The American Physical Society. |
| spellingShingle | Weng, S Sheng, Z He, M Zhang, J Norreys, P Sherlock, M Robinson, A Plasma currents and electron distribution functions under a dc electric field of arbitrary strength |
| title | Plasma currents and electron distribution functions under a dc electric field of arbitrary strength |
| title_full | Plasma currents and electron distribution functions under a dc electric field of arbitrary strength |
| title_fullStr | Plasma currents and electron distribution functions under a dc electric field of arbitrary strength |
| title_full_unstemmed | Plasma currents and electron distribution functions under a dc electric field of arbitrary strength |
| title_short | Plasma currents and electron distribution functions under a dc electric field of arbitrary strength |
| title_sort | plasma currents and electron distribution functions under a dc electric field of arbitrary strength |
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