2006
DOI: 10.1088/0031-8949/73/2/009
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Dust-charge fluctuations with non-Maxwellian distribution functions

Abstract: Dust grains immersed in a plasma can exhibit charge fluctuations in response to the oscillatory plasma currents flowing onto them. The fluctuation electrodynamics of dusty plasmas are determined by taking into account the dynamics of charging processes associated with plasma currents. Expressions for the charging currents are derived using kappa and generalized (r, q) distribution functions. The dispersion relation of dust-acoustic waves is modified while taking into account these distribution functions. Furth… Show more

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Cited by 109 publications
(73 citation statements)
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“…Te, i 4πn e, i0 e 2 1 2 is the Debye wavelength in superthermal plasma which is much smaller than found for a Maxwellian plasma and has been shown by [39,41] and a d is the radius of dust grain.…”
Section: Lorentzian-type Charging Currentsmentioning
confidence: 89%
See 1 more Smart Citation
“…Te, i 4πn e, i0 e 2 1 2 is the Debye wavelength in superthermal plasma which is much smaller than found for a Maxwellian plasma and has been shown by [39,41] and a d is the radius of dust grain.…”
Section: Lorentzian-type Charging Currentsmentioning
confidence: 89%
“…The Lorentzian charging currents are derived by using Vlasov-kinetic model whose fluid version by Rubab and Murtaza [41] and in the limit κ ! ∞, our results matched with Das et al, [32].…”
Section: Lorentzian-type Charging Currentsmentioning
confidence: 99%
“…Dust kinetic Alfvén waves with finite Larmor radius effects have been examined rigorously in a uniform dusty plasma in the presence of an external magnetic field (Rubab et al 2009). Expressions for the charging currents have been derived using kappa and generalized (r, q) distribution functions (Rubab and Murtaza 2006). Effects of dust charge fluctuations on nonlinear dust ion-acoustic waves have been studied (Alinejad 2011).…”
Section: Introductionmentioning
confidence: 99%
“…It has been also known that the plasma identified by the Yukawa-type Debye-Hückel model could be classified as the weakly coupled plasma since the average interaction energy between particles is small compared to the average kinetic energy of a plasma particle. However, in numerous plasmas, the coupling of the equilibrium plasma with the external field often generates superthermal electrons departed from the conventional Maxwellian distribution [5][6][7][8][9]. In these non-Maxwellian plasmas, the interaction potential would not be properly characterized by the standard Debye-Hückel model obtained by the Maxwellian distribution of plasma particles because of the strong collective phenomena of nonideal particle interactions [10,11].…”
mentioning
confidence: 99%