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The floating potential of spherical probes and dust grains. Part 1. Radial motion theory

Published online by Cambridge University Press:  21 August 2002

R. V. KENNEDY  and
J. E. ALLEN
R. V. KENNEDY
Affiliation:
Oxford University, Department of Engineering Science, Parks Road, Oxford OX1 3PJ, UK
J. E. ALLEN
Affiliation:
Oxford University, Department of Engineering Science, Parks Road, Oxford OX1 3PJ, UK
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Abstract

A theoretical analysis of spherical probes in plasmas is presented. It is assumed that the probe is at floating potential, that ion motion with respect to the probe is radial and that the electrons are Maxwellian. The analysis shows that as probe radius divided by Debye length tends to zero, the ratio of floating potential to electron temperature also goes to zero.

Type
Research Article
Information
Journal of Plasma Physics , Volume 67 , Issue 4 , May 2002 , pp. 243 - 250
Copyright
2002 Cambridge University Press

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