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Levitation of cylindrical particles in the sheath of an rf plasma

Levitation of cylindrical particles in the sheath of an rf plasma Microrods were levitated in the collisional sheath of a rf plasma. Rods below a critical length settle vertically, parallel to the electric field, while longer rods float horizontally. Usually rods with other inclinations spin about a vertical axis. These experimental features fit well with a model that includes a theoretical profile for the sheath, a plasma model for the screening length, which increases going deeper in the sheath, and a plasma theory for the charging of the rod’s elements. Despite the agreement this paper highlights the need for a better understanding of the charging mechanism of bodies in sheaths and of the transition region in collisional sheaths. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review E American Physical Society (APS)

Levitation of cylindrical particles in the sheath of an rf plasma

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Publisher
American Physical Society (APS)
Copyright
Copyright © 2001 The American Physical Society
ISSN
1095-3787
DOI
10.1103/PhysRevE.63.036406
pmid
11308774
Publisher site
See Article on Publisher Site

Abstract

Microrods were levitated in the collisional sheath of a rf plasma. Rods below a critical length settle vertically, parallel to the electric field, while longer rods float horizontally. Usually rods with other inclinations spin about a vertical axis. These experimental features fit well with a model that includes a theoretical profile for the sheath, a plasma model for the screening length, which increases going deeper in the sheath, and a plasma theory for the charging of the rod’s elements. Despite the agreement this paper highlights the need for a better understanding of the charging mechanism of bodies in sheaths and of the transition region in collisional sheaths.

Journal

Physical Review EAmerican Physical Society (APS)

Published: Mar 1, 2001

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