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Charging of a spherical dust particle on a plasma-facing wall

Published online by Cambridge University Press:  20 December 2006

YUKIHIRO TOMITA ,
R. SMIRNOV ,
T. TAKIZUKA  and
D. TSKHAKAYA
YUKIHIRO TOMITA
Affiliation:
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
R. SMIRNOV
Affiliation:
The Graduate University for Advanced Studies (Soken-dai), 322-6 Oroshi-cho, Toki 509-5292, Japan
T. TAKIZUKA
Affiliation:
Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka, Ibaraki 311-0193, Japan
D. TSKHAKAYA
Affiliation:
Association Euratom-ÖAW, Institute of Theoretical Physics, University of Innsbruck, Technikerstrasse 25/II, Innsbruck A-6020, Austria
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Abstract

The induced charge of a spherical conducting dust particle on a plasma-facing wall is studied analytically. An external non-uniform electric field is approximated by the polynomial of the axial coordinate and the bipolar coordinate is introduced in order to employ the boundary condition. The result is applied to the dust in the non-uniform electric field in the Debye sheath in front of the conducting wall. The results are useful for analyzing the shielding effects of the plasma surrounding a dust particle.

Type
Papers
Information
Journal of Plasma Physics , Volume 72 , Issue 6 , December 2006 , pp. 1015 - 1018
Copyright
2006 Cambridge University Press

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