Microparticles in a Collisional Rf Plasma Sheath under Hypergravity Conditions as Probes for the Electric Field Strength and the Particle Charge

被引：51

作者：

Beckers, J. ^{[1
]}

Ockenga, T. ^{[2
]}

Wolter, M. ^{[2
]}

Stoffels, W. W. ^{[1
]}

van Dijk, J. ^{[1
]}

Kersten, H. ^{[2
]}

Kroesen, G. M. W. ^{[1
]}

机构：

[1] Eindhoven Univ Technol, Dept Appl Phys, NL-5600 MB Eindhoven, Netherlands

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

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 11期

关键词：

DUSTY PLASMAS; DISCHARGES; MODEL;

D O I：

10.1103/PhysRevLett.106.115002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We used microparticles under hypergravity conditions, induced by a centrifuge, in order to measure nonintrusively and spatially resolved the electric field strength as well as the particle charge in the collisional rf plasma sheath. The measured electric field strengths demonstrate good agreement with the literature, while the particle charge shows decreasing values towards the electrode. We demonstrate that it is indeed possible to measure these important quantities without changing or disturbing the plasma.

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页数：4

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