Energy landscape in 3D finite dust clusters derived from shell transitions

被引：4

作者：

Melzer, A. ^{[1
]}

Kaeding, S. ^{[1
]}

Block, D. ^{[2
]}

Piel, A. ^{[2
]}

机构：

[1] Ernst Moritz Arndt Univ Greifswald, Inst Phys, D-17487 Greifswald, Germany

[2] Univ Kiel, IEAP, D-24098 Kiel, Germany

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2008年 / 20卷 / 40期

关键词：

D O I：

10.1088/0953-8984/20/40/404204

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Experiments on three-dimensional (3D) spherical arrangements of charged dust particles in a plasma confinement (Yukawa balls) are presented. The plasma trap provides a 3D isotropic harmonic confinement in which a small number of dust particles, N < 100, are trapped. The particle arrangement is recorded using stereoscopic imaging. Transitions between different configurations of Yukawa balls are observed that allow us to determine the energy landscape in such a finite cluster. The experiments have been compared to molecular dynamics ( MD) simulations with very good agreement.

引用

页数：6

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