Fluctuation of charge on dust particles in a complex plasma

Sodha, M. S.; Mishra, S. K.; Misra, Shikha; Srivastava, Sweta
July 2010
Physics of Plasmas;Jul2010, Vol. 17 Issue 7, p073705
Academic Journal
This paper presents an analytical model for the evaluation of the fluctuation of the charge on the dust particles in a complex plasma. In contrast to earlier analyses, which ignored the effect of dust particles on density and temperature of electrons and ions, the present model takes into account the number and energy balance of electrons and ions. Three cases, viz., (i) no emission, (ii) thermionic emission, and (iii) photoelectric emission of electrons from the dust particles, have been considered. The results have been graphically illustrated for typical parameters. It is seen that the plasma parameters, and hence the fluctuations, are considerably affected by the consideration of number and energy balance of electrons and ions. A comparison of the results of the present analysis with those of earlier works has also been made.


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