Shielding of a moving test charge in a quantum plasma
| Autor: | Else, D., Kompaneets, R., Vladimirov, S. V. |
|---|---|
| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Phys. Rev. E 82, 026410 (2010) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevE.82.026410 |
| Popis: | The linearized potential of a moving test charge in a one-component fully degenerate fermion plasma is studied using the Lindhard dielectric function. The motion is found to greatly enhance the Friedel oscillations behind the charge, especially for velocities larger than a half of the Fermi velocity, in which case the asymptotic behavior of their amplitude changes from 1/r^3 to 1/r^2.5. In the absence of the quantum recoil (tunneling) the potential reduces to a form similar to that in a classical Maxwellian plasma, with a difference being that the plasma oscillations behind the charge at velocities larger than the Fermi velocity are not Landau-damped. Comment: 9 pages, 11 figures. v3: Fixed typo, updated abstract |
| Databáze: | arXiv |
| Externí odkaz: |
|