Dust charging effects on test charge potential in a multi-ion dusty plasma

Ali, S.
November 2009
Physics of Plasmas;Nov2009, Vol. 16 Issue 11, p113706
Academic Journal
The Debye–Hückel and oscillatory wake potentials caused by a test charge are studied in a multi-ion dusty plasma, whose constituents are the Boltzmann distributed electrons and light positive ions, the heavy mobile negative ions, and static but charge fluctuating dust particles. For this purpose, fluid equations are employed to obtain the dielectric constant of the dust-negative-ion acoustic wave involving the negative ions and dust charge fluctuation effects. Theoretical and numerical investigations have revealed the modification in the Debye–Hückel and wake potentials due to the effects of dust relaxation rate, dust absorption frequency, dust grain radius, and negative ion temperature. The present results should be important to form new materials in the presence of negative ions in laboratory as well as dust coagulation/agglomeration in space dusty plasmas.


Related Articles

  • The role of negative ions on the Jeans instability in a complex plasma in the presence of nonthermal positive ions. Roy, Banamali; Sarkar, Susmita; Khan, Manoranjan; Gupta, M. R. // Physics of Plasmas;Oct2006, Vol. 13 Issue 10, p102904 

    The role of negative ions on Jeans instability in the presence of nonthermal positive ions has been investigated in this paper. Electrons and negative ions are considered Boltzmann-distributed, while the positive ions follow nonthermal velocity distribution. A negatively charged dust component...

  • Obliquely propagating electrostatic solitary structures in a magnetized hot dusty plasma with.... Mamun, A.A.; Alam, M.N.; Azad, A.K. // Physics of Plasmas;Apr98, Vol. 5 Issue 4, p1212 

    Investigates the obliquely propagating electrostatic solitary structures in a hot magnetized dusty plasma with trapped ions. Discussion on the nonlinear dust-acoustic waves; Establishment of electrostatic wave dynamics from the Boltzmann ion distribution to a trapped ion; Details on the changes...

  • Solitary potentials in dusty plasmas. Mamun, A.A.; Cairns, R.A.; Shukla, P.K. // Physics of Plasmas;Feb96, Vol. 3 Issue 2, p702 

    Shows that a dusty plasma with inertial dust fluid and Boltzman distributed ions admits only negative solitary potentials associated with nonlinear dust-acoustic waves. Dynamics of small-amplitude disturbances governed by the Korteweg-de Vries equation; Associated dust and ion density...

  • Dust acoustic drift waves in a dusty plasma. Prasad, P.V. Siva Rama // Physics of Plasmas;Oct98, Vol. 5 Issue 10, p3524 

    Examines dust acoustic drift waves in a magnetized inhomogeneous dusty plasma. Provision of the inertia for the wave, electrons and ions in a linearized Boltzmann distribution; Consideration of the coupling of the perturbation of charge on the dust particles; Classification of the dust particle...

  • Dusty plasma expansion with a variable charge in a spherical configuration. Djebli, M.; Annou, R.; Zerguini, T. H. // Physics of Plasmas;May2001, Vol. 8 Issue 5, p1493 

    The expansion of a dusty plasma into a vacuum with a variable charge is considered self-consistently. Due to the plasma spatial finitude, loss terms are introduced in fluid equations. Particles attachment also imposes that the Boltzmann distribution be relaxed. A nonlinear differential equations...

  • Interaction of Charged Dust Particles in Clouds of Thermodynamically Equilibrium Charges. Gundienkov, V. A.; Yakovlenko, S. I. // Journal of Experimental & Theoretical Physics;Nov2002, Vol. 95 Issue 5, p864 

    The solution of the Poisson�Boltzmann equation for a cloud of charges surrounding two charged dust particles treated as Debye atoms forming a Debye molecule is investigated numerically using Cassini coordinates. The electric force exerted on a dust particle by the other dust particle was...

  • Influence of suprathermality on the obliquely propagating dust-acoustic solitary waves in a magnetized dusty plasma. Shahmansouri, Mehran // Astrophysics & Space Science;Mar2013, Vol. 344 Issue 1, p153 

    Dust-acoustic (DA) solitary waves are investigated in a magnetized dusty plasma comprising cold dust fluid and kappa-distributed ions and/or electrons. The influence of suprathermal particles, obliqueness, and ion temperature on the DA solitary waves is investigated. We find that only negative...

  • Electrostatic solitary waves in a magnetized dusty plasma. Maharaj, S. K.; Bharuthram, R.; Singh, S. V.; Pillay, S. R.; Lakhina, G. S. // Physics of Plasmas;11/1/2008, Vol. 15 Issue 11, p113701 

    The nonlinear evolution of driven low-frequency electrostatic waves is investigated in a three-component magnetized dusty plasma comprised of a warm dust fluid, electrons, and ions. Electrons as well as ions are considered to have Boltzmann distributions. The fluid equations for the dust along...

  • Time evolution of ion-acoustic double layers in an unmagnetized plasma. Bharuthram, R.; Momoniat, E.; Mahomed, F.; Singh, S. V.; Islam, M. K. // Physics of Plasmas;Aug2008, Vol. 15 Issue 8, p082304 

    Ion-acoustic double layers are examined in an unmagnetized, three-component plasma consisting of cold ions and two temperature electrons. Both of the electrons are considered to be Boltzmann distributed and the ions follow the usual fluid dynamical equations. Using the method of characteristics,...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics