Dispersion of plasma dust acoustic waves in the strong-coupling regime

被引：528

作者：

Pieper, JB ^{[1
]}

Goree, J ^{[1
]}

机构：

[1] UNIV IOWA,DEPT PHYS & ASTRON,IOWA CITY,IA 52242

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.77.3137

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Low-frequency compressional waves were observed in a suspension of strongly coupled 9.4 mu m spheres in an rf Kr plasma. Both parts of the complex wave number were measured to determine the dispersion relation, which agreed with a theoretical model of damped dust acoustic waves, ignoring strong coupling, but not with a strongly coupled dust-lattice wave model. The results yield experimental values for the dust plasma frequency, charge, Debye length, and damping rate, and support the applicability of fluid-based dispersion relations to strongly coupled dusty plasmas, which has been a controversy.

引用

页码：3137 / 3140

页数：4

共 17 条

[1]

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[2] LABORATORY OBSERVATION OF THE DUST-ACOUSTIC WAVE MODE [J].