Dust acoustic waves with dust charge fluctuations—revisited
| Autor: | D. Resendes, P. K. Shukla |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Physics
Dusty plasma Scattering Wave propagation Astronomy Astrophysics::Cosmology and Extragalactic Astrophysics Acoustic wave Electron Condensed Matter Physics Ion acoustic wave Electromagnetic radiation Mesosphere Computational physics Physics::Space Physics Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Astrophysics::Galaxy Astrophysics |
| Zdroj: | Physics of Plasmas. 7:1614-1616 |
| ISSN: | 1089-7674 1070-664X |
| DOI: | 10.1063/1.873983 |
| Popis: | The dust acoustic wave spectrum is rederived, taking into account dust charge fluctuations that are produced by orbital-motion limited and secondary electron currents in an unmagnetized dusty plasma containing negative or positive dust grains. It is found that the secondary electron current reduces the magnitude of fluctuating electron currents, which affect the propagation of the dust acoustic waves. The relevance of this investigation to enhanced scattering of electromagnetic waves off the dust-acoustic waves in the Earth’s polar mesosphere is discussed. |
| Databáze: | OpenAIRE |
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