The Cross-Field Acceleration of Charged Dust Grains by the Ponderomotive Force of Compressional Waves in Dusty Plasmas

2005 ◽  
Vol 629 (2) ◽  
pp. L93-L95 ◽  
Author(s):  
P. K. Shukla ◽  
L. Stenflo
Keyword(s):  
Ponderomotive Force ◽  
Dusty Plasmas ◽  
Charged Dust ◽  
Dust Grains ◽  
Compressional Waves ◽  
The Cross

scholarly journals Plasma Diagnostic Methods: Test Charge Response in Lorentzian Dusty Plasmas

2020 ◽  
Author(s):  
Shahid Ali ◽  
Yas Al-Hadeethi
Keyword(s):  
Dusty Plasmas ◽  
Diagnostic Methods ◽  
Charged Dust ◽  
Dust Grains ◽  
Plasma Diagnostic ◽  
Acoustic Oscillations ◽  
Plasma Parameters ◽  
Charge Potential ◽  
Test Charge ◽  
Electrons And Ions

Different plasma diagnostic methods are briefly discussed, and the framework of a test charge technique is effectively used as diagnostic tool for investigating interaction potentials in Lorentzian plasma, whose constituents are the superthermal electrons and ions with negatively charged dust grains. Applying the space-time Fourier transformations to the linearized coupled Vlasov-Poisson equations, a test charge potential is derived with a modified response function due to energetic ions and electrons. For a test charge moving much slower than the dust-thermal speed, there appears a short-range Debye-Hückel (DH) potential decaying exponentially with distance and a long-range far-field (FF) potential as the inverse cube of the distance from test charge. The FF potentials exhibit more localized shielding curves for low-Kappas, and smaller effective shielding length is observed in dusty plasma compared to electron-ion plasma. However, a wakefield (WF) potential is formed behind the test charge when it resonates with dust-acoustic oscillations, whereas a fast moving test charge leads to the Coulomb potential having no shielding around. It is revealed that superthermality and plasma parameters significantly alter the DH, FF, and WF potentials in space plasmas of Saturn’s E-ring, where power-law distributions can be used for energetic electrons and ions in contrast to Maxwellian dust grains.

Time-dependent non-planar dust-acoustic solitary and shock waves in strongly coupled adiabatic dusty plasma

2012 ◽  
Vol 79 (3) ◽  
pp. 249-255 ◽  
Author(s):  
M. S. RAHMAN ◽  
B. SHIKHA ◽  
A. A. MAMUN
Keyword(s):  
Shock Waves ◽  
Dusty Plasmas ◽  
Time Dependent ◽  
Planar Geometry ◽  
Charged Dust ◽  
Dust Grains ◽  
Strongly Coupled ◽  
And Shock Waves ◽  
Dust Acoustic ◽  
Solitary And Shock Waves

AbstractTime-dependent cylindrical and spherical dust-acoustic (DA) solitary and shock waves propagating in a strongly coupled dusty plasmas (containing strongly correlated negatively charged dust grains and weakly correlated adiabatic electrons and ions) are investigated. It is shown that cylindrical and spherical DA solitary and shock waves exist with negative potential, and that the strong correlation between the charged dust grains is a source of dissipation, and is responsible for the formation of cylindrical or spherical DA shock structures. It is also shown that the effects of a non-planar geometry (cylindrical and spherical) significantly modify the basic features (e.g. amplitude, width, speed, etc.) of DA solitary and shock waves. The implications of our results in laboratory experiments are briefly discussed.

scholarly journals Dust-Ion-Acoustic Rogue Waves in a Dusty Plasma Having Super-Thermal Electrons

Gases ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 106-116
Author(s):  
Akib Al Noman ◽  
Md Khairul Islam ◽  
Mehedi Hassan ◽  
Subrata Banik ◽  
Nure Alam Chowdhury ◽  
...  
Keyword(s):  
Dusty Plasma ◽  
Modulational Instability ◽  
Rogue Waves ◽  
Dusty Plasmas ◽  
Charged Dust ◽  
Dust Grains ◽  
Ion Temperature ◽  
Ion Acoustic ◽  
Kappa Distributed Electrons ◽  
Dia Waves

The standard nonlinear Schrödinger Equation (NLSE) is one of the elegant equations to find detailed information about the modulational instability criteria of dust-ion-acoustic (DIA) waves and associated DIA rogue waves (DIARWs) in a three-component dusty plasma medium with inertialess super-thermal kappa distributed electrons, and inertial warm positive ions and negative dust grains. It can be seen that the plasma system supports both fast and slow DIA modes under consideration of inertial warm ions along with inertial negatively charged dust grains. It is also found that the modulationally stable parametric regime decreases with κ. The numerical analysis has also shown that the amplitude of the first and second-order DIARWs decreases with ion temperature. These results are to be considered the cornerstone for explaining the real puzzles in space and laboratory dusty plasmas.

scholarly journals Polarization-force-induced dust grain acceleration and intrinsic magnetization of dusty plasmas

2010 ◽  
Vol 76 (5) ◽  
pp. 677-680 ◽  
Author(s):  
N. SHUKLA ◽  
P. K. SHUKLA
Keyword(s):  
Magnetic Fields ◽  
Dusty Plasma ◽  
Dusty Plasmas ◽  
Charged Dust ◽  
Dust Grains ◽  
Polarization Force ◽  
Dust Grain

AbstractIt is shown that the polarization force, arising from interactions between thermal ions and highly charged dust grains, can accelerate charged dust grains and can also create spontaneous magnetic fields in a quasi-neutral dusty plasma. The present results are relevant for understanding the origin of dust grain acceleration and the generation of spontaneous magnetic fields in cosmic dusty plasmas.

Effect of dust size distribution on ion-acoustic solitons in dusty plasmas with different dust grains

2017 ◽  
Vol 43 (2) ◽  
pp. 212-217
Author(s):  
Dong-Ning Gao ◽  
Yang Yang ◽  
Qiang Yan ◽  
Xiao-Yun Wang ◽  
Wen-Shan Duan
Keyword(s):  
Size Distribution ◽  
Dusty Plasmas ◽  
Dust Grains ◽  
Dust Size Distribution ◽  
Ion Acoustic ◽  
Ion Acoustic Solitons

Observations of dusty plasmas with magnetized dust grains

2000 ◽  
Vol 33 (21) ◽  
pp. 2754-2758 ◽  
Author(s):  
Q-Z Luo ◽  
N D'Angelo
Keyword(s):  
Dusty Plasmas ◽  
Dust Grains

scholarly journals Charged dust and shock phenomena in the Solar System

2006 ◽  
Vol 13 (2) ◽  
pp. 223-229 ◽  
Author(s):  
S. I. Popel ◽  
A. A. Gisko
Keyword(s):  
Solar System ◽  
Dusty Plasmas ◽  
Bow Shock ◽  
Charged Dust ◽  
Near Earth Space ◽  
Gaseous Substance ◽  
Ion Acoustic ◽  
Meteoroid Impact ◽  
Physical Phenomena ◽  
Regolith Layer

Abstract. The results on shock phenomena in dusty plasmas of the Solar System are reviewed. The problems of dust ion acoustic bow shock in interaction of the solar wind with dusty cometary coma and formation of transient atmospheres of atmosphereless cosmic bodies such as Moon, Mercury, asteroids and comets are considered. The latter assumes the evolution of meteoroid impact plumes and production of charged dust grains due to the condensation of both the plume substance and the vapor thrown from the crater and the surrounding regolith layer. Physical phenomena occurring during large meteoroid impacts can be modeled with the aid of active rocket experiments, which involve the release of some gaseous substance in near-Earth space. New vistas in investigation of shock processes in natural dusty plasmas are determined.

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