Nonlinear response of electron dynamics to a positive ion
| Autor: | Bernard Talin, Ilya V. Pogorelov, Annette Calisti, James W. Dufty |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Physics
Field (physics) Autocorrelation General Physics and Astronomy Charge number Statistical and Nonlinear Physics Charge (physics) Electron 7. Clean energy 01 natural sciences 010305 fluids & plasmas Ion Correlation function Electric field 0103 physical sciences Atomic physics 010306 general physics Mathematical Physics |
| Zdroj: | Journal of Physics A: Mathematical and General. 36:6057-6062 |
| ISSN: | 1361-6447 0305-4470 |
| Popis: | Electric field dynamics at a positive ion imbedded in an electron gas is considered using a semiclassical description. The dependence of the field autocorrelation function on charge number is studied for strong ion-electron coupling via MD simulation. The qualitative features for larger charge numbers are a decreasing correlation time followed by an increasing anticorrelation. Stopping power and related transport coefficients determined by the time integral of this correlation function result from the competing effects of increasing initial correlations and decreasing dynamical correlations. An interpretation of the MD results is obtained from an effective single particle model showing good agreement with the simulation results. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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