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Radiation forces between dust grains in a plasma

Published online by Cambridge University Press:  01 April 2008

J. T. MENDONÇA  and
L. STENFLO
J. T. MENDONÇA
Affiliation:
CFIF and GoLP, Instituto Superior Técnico, 1049-001 Lisboa, Portugal ([email protected])
L. STENFLO
Affiliation:
Physics Department, Umeå University, SE-90187 Umeå, Sweden
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Abstract

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In this work we show that a repulsive force between nearby dust grains in a plasma can exist, due to scattering of the incident radiation. Two types of forces are discussed, one of them being formally identical to electrostatic repulsion. This leads to the definition of an effective dust charge of the dust grain, which only depends on the scattering process. Our discussion shows that such a repulsive interaction occurs in quite general physical conditions.

Type
Letter to the Editor
Information
Journal of Plasma Physics , Volume 74 , Issue 2 , April 2008 , pp. 145 - 150
Copyright
Copyright © Cambridge University Press 2008

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