Measurement of the wakefield attraction for "dust plasma molecules"

被引：61

作者：

Melzer, A

Schweigert, VA

Piel, A

机构：

[1] Univ Kiel, Inst Expt & Angew Phys, D-24098 Kiel, Germany

[2] Russian Acad Sci, Inst Thermophys, Novosibirsk 630090, Russia

来源：

PHYSICA SCRIPTA | 2000年 / 61卷 / 04期

关键词：

D O I：

10.1238/Physica.Regular.061a00494

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The interaction forces in a system of two single dust particles immersed in the space charge sheath of a plasma discharge has been investigated quantitatively. From different techniques the attractive force provided by the wakefield of the dust particles has been measured from direct laser manipulation of the single particles. Furthermore, a structural phase transition with hysteresis of this system from a vertically aligned dust molecule into a separated state has been observed. The forces, structures and the hysteresis have been explained by means of own previous plasma crystal models.

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页码：494 / 501

页数：8

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