A reduced coupled-mode description for the electron-ion energy relaxation in dense matter
We present a simplified model for the electron-ion energy relaxation in dense two-temperature systems that includes the effects of coupled collective modes. It also extends the standard Spitzer result to both degenerate and strongly coupled systems. Starting from the general coupled-mode description...
| Päätekijät: | , |
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| Aineistotyyppi: | Journal article |
| Kieli: | English |
| Julkaistu: |
2008
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| _version_ | 1826296655306031104 |
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| author | Gregori, G Gericke, DO |
| author_facet | Gregori, G Gericke, DO |
| author_sort | Gregori, G |
| collection | OXFORD |
| description | We present a simplified model for the electron-ion energy relaxation in dense two-temperature systems that includes the effects of coupled collective modes. It also extends the standard Spitzer result to both degenerate and strongly coupled systems. Starting from the general coupled-mode description, we are able to solve analytically for the temperature relaxation time in warm dense matter and strongly coupled plasmas. This was achieved by decoupling the electron-ion dynamics and by representing the ion response in terms of the mode frequencies. The presented reduced model allows for a fast description of temperature equilibration within hydrodynamic simulations and an easy comparison for experimental investigations. For warm dense matter, both fluid and solid, the model gives a slower electron-ion equilibration than predicted by the classical Spitzer result. Copyright © EPLA, 2008. |
| first_indexed | 2024-03-07T04:19:41Z |
| format | Journal article |
| id | oxford-uuid:ca98003b-b446-486c-94c5-062765e82b2e |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:19:41Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | oxford-uuid:ca98003b-b446-486c-94c5-062765e82b2e2022-03-27T07:08:31ZA reduced coupled-mode description for the electron-ion energy relaxation in dense matterJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:ca98003b-b446-486c-94c5-062765e82b2eEnglishSymplectic Elements at Oxford2008Gregori, GGericke, DOWe present a simplified model for the electron-ion energy relaxation in dense two-temperature systems that includes the effects of coupled collective modes. It also extends the standard Spitzer result to both degenerate and strongly coupled systems. Starting from the general coupled-mode description, we are able to solve analytically for the temperature relaxation time in warm dense matter and strongly coupled plasmas. This was achieved by decoupling the electron-ion dynamics and by representing the ion response in terms of the mode frequencies. The presented reduced model allows for a fast description of temperature equilibration within hydrodynamic simulations and an easy comparison for experimental investigations. For warm dense matter, both fluid and solid, the model gives a slower electron-ion equilibration than predicted by the classical Spitzer result. Copyright © EPLA, 2008. |
| spellingShingle | Gregori, G Gericke, DO A reduced coupled-mode description for the electron-ion energy relaxation in dense matter |
| title | A reduced coupled-mode description for the electron-ion energy relaxation in dense matter |
| title_full | A reduced coupled-mode description for the electron-ion energy relaxation in dense matter |
| title_fullStr | A reduced coupled-mode description for the electron-ion energy relaxation in dense matter |
| title_full_unstemmed | A reduced coupled-mode description for the electron-ion energy relaxation in dense matter |
| title_short | A reduced coupled-mode description for the electron-ion energy relaxation in dense matter |
| title_sort | reduced coupled mode description for the electron ion energy relaxation in dense matter |
| work_keys_str_mv | AT gregorig areducedcoupledmodedescriptionfortheelectronionenergyrelaxationindensematter AT gerickedo areducedcoupledmodedescriptionfortheelectronionenergyrelaxationindensematter AT gregorig reducedcoupledmodedescriptionfortheelectronionenergyrelaxationindensematter AT gerickedo reducedcoupledmodedescriptionfortheelectronionenergyrelaxationindensematter |