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Dispersion properties of dusty plasmas

Published online by Cambridge University Press:  13 March 2009

U. de Angelis ,
R. Bingham  and
V. N. Tsytovich
U. de Angelis
Affiliation:
Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, U.K.
R. Bingham
Affiliation:
Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, U.K.
V. N. Tsytovich
Affiliation:
Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, U.K.
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Abstract

The presence of charged dust particles in a plasma can change its dispersion properties. From the linear response of an equilibrium dusty plasma to the propagation of small perturbations, we find an average dielectric function є(ω, k) for the system in the case when the grain space distribution is random, and ensemble averages are taken over the random variables. For the case of high-frequency plasma waves, when for the unperturbed case (cold plasma), we find that є becomes complex in the presence of the dust, leading to possible damping in a domain where Landau damping is usually negligible (ω ≫ kVT).

Type
Research Article
Information
Journal of Plasma Physics , Volume 42 , Issue 3 , December 1989 , pp. 445 - 456
Copyright
Copyright © Cambridge University Press 1989

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References

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