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Polarization force for different dusty plasma situations

Published online by Cambridge University Press:  12 November 2013

K. S. Ashrafi ,
A. A. Mamun  and
P. K. Shukla
K. S. Ashrafi*
Affiliation:
Department of Physics, Begum Rokeya University, Rangpur-5400, Bangladesh
A. A. Mamun
Affiliation:
Department of Physics, Jahangirnagar University, Savar, Dhaka-1342, Bangladesh
P. K. Shukla
Affiliation:
RUB International Chair, International Centre for Advanced Studies in Physical Sciences, Faculty of Physics & Astronomy, Ruhr-Universität Bochum, D-44780 Bochum, Germany
*
†Email address for correspondence: [email protected]
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Abstract

Polarization force (acting on a dust grain) and its modification by polarity of dust, non-isothermal (viz. non-thermal and trapped) ions, adiabaticity of electrons and ions, etc. have been investigated theoretically. It has been found that the polarization force is significantly modified by these effects, i.e. the magnitude of the polarization force is significantly decreased by the presence of non-thermal ions and by the adiabaticity of electrons and ions. On the other hand, it is significantly increased by the presence of trapped ions. It has been also shown that the magnitude of the polarization force is increased (decreased) by electric potential in the case of positively (negatively) charged dust. The relevance of our investigation to some space and astrophysical plasma situations is discussed.

Type
Papers
Information
Journal of Plasma Physics , Volume 80 , Issue 1 , February 2014 , pp. 1 - 7
Copyright
Copyright © Cambridge University Press 2013 

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References

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