Measurement of the interaction force among particles in three-dimensional plasma clusters

被引：42

作者：

Antonova, T ^{[1
]}

Annaratone, BM ^{[1
]}

Goldbeck, DD ^{[1
]}

Yaroshenko, V ^{[1
]}

Thomas, HM ^{[1
]}

Morfill, GE ^{[1
]}

机构：

[1] Max Planck Inst Extraterr Phys, D-85740 Garching, Germany

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.96.115001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The interaction forces between particles have been studied in a 3D plasma cluster under weak external confinement. A suitable combination of dc and rf applied to a small electrode provided gravity compensation, uniform over dimensions much larger than the cluster itself. The forces acting on the particles could be reconstructed due to unique three-dimensional diagnostics, which allow us to obtain coordinates and velocities of all the particles simultaneously. The measurements yield a maximum (external) confinement force of 1.4x10(-15)N and interparticle force that is repulsive at short distances and attractive at larger distances, with a maximum attractive force of 2.4x10(-14)N at particle separation 195 mu m.

引用

页数：4

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