| Original Articles |
|
|
|
|
Electron Density Fluctuation in a Dusty Plasma
|
| LI Fang |
| Institute of Electronics, Chinese Academy of Sciences, Beijing 100080
|
|
| Cite this article: |
|
LI Fang 2002 Chin. Phys. Lett. 19 214-216 |
|
|
|
Abstract The expressions of electron density fluctuation produced by dust particles in a dusty plasma are derived. It is shown that the fluctuation comes from three different sources. The first source is the thermal motion of the dust particles, which is of a fluctuation power spectrum proportional to ndZ2. The second source is the charge change of the dust particles, which is of a power spectrum proportional to n2dZ3. The third source is the eigen-mode oscillation of the dust particles, which is of fluctuation power spectrum proportional to √nd. The powerful electron density fluctuation exists in a dusty plasma due to the fact that the dust particles are high charged. The results may explain the strong electromagnetic scattering by a space dust layer in the Earth's mesosphere.
|
| Keywords:
52.27.Lw
52.25.Gj
52.35.Ra
|
|
|
Published: 01 February 2002
|
|
| PACS: |
52.27.Lw
|
(Dusty or complex plasmas; plasma crystals)
|
| |
52.25.Gj
|
(Fluctuation and chaos phenomena)
|
| |
52.35.Ra
|
(Plasma turbulence)
|
|
|
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
