THE RAYLEIGH-TAYLOR INSTABILITY IN DUSTY PLASMAS

被引：42

作者：

DANGELO, N

机构：

[1] Department of Physics and Astronomy, The University of Iowa, Iowa City

来源：

PLANETARY AND SPACE SCIENCE | 1993年 / 41卷 / 06期

关键词：

D O I：

10.1016/0032-0633(93)90007-O

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Rayleigh-Taylor instability in dusty plasmas is analyzed. The presence of negatively charged dust substantially reduces the range of unstable wave-numbers, while the opposite is true for positively charged dust. The charge on the dust grains is assumed to remain constant throughout wave growth. It is shown, on the basis of recent work by Havnes et al. (Phys. Scr. 45, 491, 1992) and Melandso et al. (J. geophys. Res., in press, 1993), that this assumption is valid only for wave frequencies much smaller (or much larger) than the charging frequency of the dust grains.

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页码：469 / 474

页数：6

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