scholarly journals A new formulation for the dielectric tensor for magnetized dusty plasmas with variable charge on the dust particles

2008 ◽  
Vol 38 (3a) ◽  
Author(s):  
L. F. Ziebell ◽  
R. S. Schneider ◽  
M. C. de Juli ◽  
R. Gaelzer
Keyword(s):  
Dusty Plasmas ◽  
Dust Particles ◽  
Dielectric Tensor ◽  
Variable Charge ◽  
New Formulation

scholarly journals The dielectric tensor for dusty magnetized plasmas with variable charge on dust particles

1998 ◽  
Vol 60 (2) ◽  
pp. 243-263 ◽  
Author(s):  
M. C. de JULI ◽  
R. S. SCHNEIDER
Keyword(s):  
Magnetic Field ◽  
Wave Propagation ◽  
External Magnetic Field ◽  
Dusty Plasmas ◽  
Dust Particles ◽  
Magnetosonic Wave ◽  
Dielectric Tensor ◽  
Magnetized Plasmas ◽  
Variable Charge ◽  
Electrons And Ions

We derive the dielectric tensor for multicomponent magnetized dusty plasmas, including the effect of capture of plasma electrons and ions by the dust particles. For propagation perpendicular to the external magnetic field and Maxwellian distributions of electrons and ions, we obtain compact expressions for the components of the dielectric tensor, which can be used to analyse wave propagation. An application to the magnetosonic wave is presented.

Small-amplitude electrostatic solitary waves in a dusty plasma with variable charge resonant trapped dust particles

2007 ◽  
Vol 73 (6) ◽  
pp. 901-910 ◽  
Author(s):  
LEILA AIT GOUGAM ◽  
MOULOUD TRIBECHE ◽  
FAWZIA MEKIDECHE
Keyword(s):  
Solitary Waves ◽  
Small Amplitude ◽  
Charge Trapping ◽  
Dusty Plasmas ◽  
Dust Particles ◽  
Plasma Parameters ◽  
Variable Charge ◽  
Dust Charge ◽  
Temperature Equilibrium ◽  
Dust Grain

AbstractSmall-amplitude electrostatic solitary waves are investigated in unmagnetized dusty plasmas with variable charge resonant trapped dust particles. It is found that under certain conditions spatially localized structures, the height and nature of which depend sensitively on the plasma parameters, can exist. The effects of dust grain temperature, equilibrium dust charge, trapping parameter, and dust size on the properties of these solitary waves are briefly discussed. A neural network with a given architecture and learning process, and which may be useful to interpret experimental data, is outlined. Our investigation may be taken as a prerequisite for the understanding of the solitary dust waves that may occur in space as well as in laboratory plasmas.

The Dielectric Tensor for Magnetized Dusty Plasmas with Superthermal Plasma Populations and Dust Particles of Different Sizes

2011 ◽  
Vol 41 (4-6) ◽  
pp. 258-274 ◽  
Author(s):  
Renato Andrade Galvão ◽  
Luiz Fernando Ziebell ◽  
Rudi Gaelzer ◽  
Marcelo Camargo de Juli
Keyword(s):  
Dusty Plasmas ◽  
Dust Particles ◽  
Dielectric Tensor ◽  
Superthermal Plasma

Waves in Magnetized Dusty Plasmas With Variable Charge on Dust Particles

2004 ◽  
Vol 32 (2) ◽  
pp. 542-550
Author(s):  
M.C. de Juli ◽  
R.S. Schneider ◽  
D. Falceta-Goncalves ◽  
V. Jatenco-Pereira
Keyword(s):  
Dusty Plasmas ◽  
Dust Particles ◽  
Variable Charge

Effects of charge dispersion in dusty plasmas

1995 ◽  
Vol 54 (3) ◽  
pp. 373-391 ◽  
Author(s):  
T. K. Aslaksen
Keyword(s):  
Charge Distribution ◽  
Dusty Plasmas ◽  
Dust Particles ◽  
Dust Charge ◽  
Kinetic Effects ◽  
Current Equation

We investigate the charge-dispersive effects on a sheath of monosized dust particles in equilibrium. This is done through describing the dust particles by using equations in (x, v) space (kinetic space) that include terms originating from the charge distribution of the dust particles. The charge-dispersive terms are assumed to be completely determined by the local charging processes. We find that the effects due to these terms are opposed by the ordinary gradient terms in the current equation in kinetic space, and they are therefore smaller than first expected. We also identify kinetic effects that are not included in the usual expression for the dust charge in hydrodynamic space.

scholarly journals Magnetosonic solitons in a dusty plasma slab

2008 ◽  
Vol 74 (5) ◽  
pp. 601-605 ◽  
Author(s):  
M. MARKLUND ◽  
L. STENFLO ◽  
P. K. SHUKLA
Keyword(s):  
Dusty Plasma ◽  
Nonlinear Equations ◽  
Dusty Plasmas ◽  
Sharp Contrast ◽  
Dust Particles ◽  
Magnetized Plasmas ◽  
Nonlinear Structures ◽  
Magnetohydrodynamic Equations ◽  
Plasma Slab

AbstractThe existence of magnetosonic solitons in dusty plasmas is investigated. The nonlinear magnetohydrodynamic equations for a warm dusty magnetoplasma are thus derived. A solution of the nonlinear equations is presented. It is shown that, owing to the presence of dust, static structures are allowed. This is in sharp contrast to the formation of the so-called shocklets in usual magnetoplasmas. A comparatively small number of dust particles can thus drastically alter the behavior of the nonlinear structures in magnetized plasmas.

Transport control of dust particles by pulse-time modulated RF in dusty plasmas

2019 ◽  
Vol 126 (4) ◽  
pp. 043302
Author(s):  
Jiashu Lin ◽  
Kuri Hashimoto ◽  
Rui Togashi ◽  
Almasbek Utegenov ◽  
Marie Hénault ◽  
...  
Keyword(s):  
Dusty Plasmas ◽  
Dust Particles ◽  
Pulse Time ◽  
Transport Control

Modified Zakharov equations in dusty plasmas with variable charges on dust particles

2003 ◽  
Vol 10 (4) ◽  
pp. 984-988 ◽  
Author(s):  
Mouloud Tribeche ◽  
Taha Houssine Zerguini
Keyword(s):  
Dusty Plasmas ◽  
Dust Particles

The floating potential of spherical probes and dust grains. II: Orbital motion theory

2003 ◽  
Vol 69 (6) ◽  
pp. 485-506 ◽  
Author(s):  
R. V. KENNEDY ◽  
J. E. ALLEN
Keyword(s):  
Analytical Solution ◽  
Surface Potential ◽  
Orbital Motion ◽  
Dusty Plasmas ◽  
Dust Particles ◽  
Floating Potential ◽  
Probe Surface ◽  
Full Theory ◽  
Ion Absorption ◽  
Yukawa Theory

Probe theory is generally used to find the potential of dust particles immersed in plasma. The orbital motion limited theory (OML) is often used to find the potential at the probe surface, but the assumptions underlying this theory are usually not valid in the case of dust and the more general orbital motion (OM) theory is much harder to calculate. Solutions are given for the OM theory in a range of cases applicable to dust. It is shown that the surface potential the full theory gives reduces to the OML result for small probes. Commonly in dusty plasmas the OML surface potential is used, with the surrounding distribution given by Debye–Hückel, or Yukawa theory. This form, however, neglects ion depletion due to the absorption of particles on the probe surface. In this paper a new analytical solution to the system is given which is applicable to small probes and dust. This new expression is equivalent to Yukawa form, but takes ion absorption into account.

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