Formation of ring-shaped fine-particle clouds in a DC plasma

被引：0

作者：

Uchida, G ^{[1
]}

Ozaki, R ^{[1
]}

Iizuka, S ^{[1
]}

Sato, N ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Dept Elect Engn, Sendai, Miyagi 9808579, Japan

来源：

FRONTIERS IN DUSTY PLASMAS | 2000年

关键词：

D O I：

10.1016/B978-044450398-5/50070-1

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We have observed various structures of fine-particle clouds by controlling the potential profile in a de ion sheath. Fine particles in a strongly-coupled state are found to form a ring-shaped and a cone-shaped cloud. We have also observed wave propagations in the cloud. By compressing the fine particle clouds in radial direction with increasing the external electric field, the Coulomb crystal changes into an unstable state, and the particles begin to oscillate in vertical direction.

引用

页码：449 / 452

页数：4

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