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Dust and plasma properties measured using two confined particles

Part of: Diagnostics of Dust in Plasmas

Published online by Cambridge University Press:  06 June 2016

T. E. Sheridan ,
Nicholas R. Weiner  and
Thomas E. Steinberger
T. E. Sheridan*
Affiliation:
Department of Physics and Astronomy, Ohio Northern University, Ada, OH 45810, USA
Nicholas R. Weiner
Affiliation:
Department of Physics and Astronomy, Ohio Northern University, Ada, OH 45810, USA
Thomas E. Steinberger
Affiliation:
Department of Physics and Astronomy, Ohio Northern University, Ada, OH 45810, USA
*
†Email address for correspondence: [email protected]
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Abstract

We consider two isolated, interacting dust particles confined in plasma. Measurements of normal mode frequencies are used to determine the dust charge, the Debye shielding length and the anisotropy of the confining potential well. For dust particles confined near the sheath edge, the vertical electric field and an effective electron temperature are also determined. This method is used to characterize the sheath above a short rectangular trench in the powered electrode of a radio-frequency discharge.

Type
Research Article
Information
Journal of Plasma Physics , Volume 82 , Issue 3 , June 2016 , 615820304
Copyright
© Cambridge University Press 2016 

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