Unstable Rayleigh-Taylor modes in the ionosphere in the presence of dusts

被引：2

作者：

Fukuyama, A. ^{[2
]}

Sen, S. ^{[1
]}

Honary, F. ^{[1
]}

机构：

[1] Univ Lancaster, Dept Commun Syst, Lancaster LA1 4WA, England

[2] Kyoto Univ, Fac Engn, Kyoto 6068501, Japan

来源：

RADIATION EFFECTS AND DEFECTS IN SOLIDS | 2010年 / 165卷 / 02期

关键词：

ionosphere; space; plasma; dust; INSTABILITY; WAVES; OSCILLATIONS; PLASMA;

D O I：

10.1080/10420150903516601

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

We develop and apply non-local theoretical and numerical model to study the stability of Rayleigh Taylor (RT) modes in the Earth's atmosphere in the presence of dusty plasma. We use fluid equations and the dynamics of charged dust grains to obtain an eigenmode equation to study the stability of the RT mode. Typical ionospheric parameters are used to investigate the stability of the mode. The growth rate of the RT is found to be considerably higher in a dusty plasma than in a pure plasma. This might be the clue in explaining the origin of low-frequency modes in the ionosphere. We also study the effects of the dust charge, the dust mass, the density scale length and the dust density on the growth rate of the instability.

引用

页码：123 / 133

页数：11

共 19 条

[11] Kelvin-Helmholtz driven modes of the magnetosphere [J].