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A note on the electrical potential distribution around a test charge in anisotropic collisional plasmas

Published online by Cambridge University Press:  21 January 2010

M. CHAUDHURI ,
S. A. KHRAPAK  and
G. E. MORFILL
M. CHAUDHURI
Affiliation:
Max-Planck Institut für extraterrestrische Physik, D-85741 Garching, Germany (chaudhuri@mpe.mpg.de)
S. A. KHRAPAK
Affiliation:
Max-Planck Institut für extraterrestrische Physik, D-85741 Garching, Germany (chaudhuri@mpe.mpg.de)
G. E. MORFILL
Affiliation:
Max-Planck Institut für extraterrestrische Physik, D-85741 Garching, Germany (chaudhuri@mpe.mpg.de)
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Abstract

In this paper, we discuss recent results concerning the electrical potential distribution around a small test charged particle in weakly ionized collisional plasmas in the presence of an ion flow. The effect of plasma absorption on the particle surface is taken into account and the results are compared with those from earlier models neglecting absorption. In the considered regime, the effect of plasma absorption is quite important and completely determines the long-range asymptote of the electrical potential.

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