Autowaves in a dc complex plasma confined behind a de Laval nozzle

被引：16

作者：

Fink, M. A. ^{[1
]}

Zhdanov, S. K. ^{[1
]}

Schwabe, M. ^{[1
,2
]}

Thoma, M. H. ^{[1
]}

Hoefner, H. ^{[1
]}

Thomas, H. M. ^{[1
]}

Morfill, G. E. ^{[1
]}

机构：

[1] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany

[2] Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA

来源：

EPL | 2013年 / 102卷 / 04期

基金：

欧洲研究理事会;

关键词：

PROJECT PLASMAKRISTALL-4 PK-4; DUSTY PLASMAS; MICROGRAVITY CONDITIONS; INSTABILITIES; WAVES; FIELD;

D O I：

10.1209/0295-5075/102/45001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Experiments to explore stability conditions and topology of a dense microparticle cloud supported against gravity by a gas flow were carried out. By using a nozzle-shaped glass insert within the glass tube of a dc discharge plasma chamber a weakly ionized gas flow through a de Laval nozzle was produced. The experiments were performed using neon gas at a pressure of 100 Pa and melamine-formaldehyde particles with a diameter of 3.43 mu m. The capturing and stable global confining of the particles behind the nozzle in the plasma were demonstrated. The particles inside the cloud behaved as a single convection cell inhomogeneously structured along the nozzle axis in a tube-like manner. The pulsed acceleration localized in the very head of the cloud mediated by collective plasma-particle interactions and the resulting wave pattern were studied in detail. Copyright (c) EPLA, 2013

引用

页数：6

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