Sagdeev potential analysis for positively charged dust grains in nonthermal dusty plasma near Mars

2007 ◽  
Vol 14 (10) ◽  
pp. 103703 ◽  
Author(s):  
W. F. El-Taibany ◽  
Miki Wadati
Keyword(s):  
Dusty Plasma ◽  
Charged Dust ◽  
Dust Grains ◽  
Sagdeev Potential ◽  
Potential Analysis ◽  
Positively Charged

Inward and outward dust acoustic cylindrical and spherical waves interaction in four-component dusty plasma with nonthermal ions

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Uday Narayan Ghosh ◽  
Prasanta Chatterjee ◽  
Barjinder Kaur
Keyword(s):  
Dusty Plasma ◽  
Charged Dust ◽  
Dust Grains ◽  
Mass Ratio ◽  
Temperature Ratio ◽  
Spherical Waves ◽  
Dust Acoustic ◽  
Waves Interaction ◽  
Positively Charged ◽  
Different Time Scales

Abstract A theoretical investigation by an all-inclusive adaptation of the PLK strategy is carried out in order to study the inward and outward interaction between two cylindrical and spherical dust acoustic solitary waves (DASWs) in an unmagnetized dusty plasma consisting of nonthermal distributed ions, negatively and positively charged dust grains along with electrons featuring Boltzmann’s distribution. The interactions and collisions between two cylindrical and spherical geometries at different time scales are studied. Also the combined effects of the nonthermality of ions, ion to electron temperature ratio as well as mass ratio of positive to negative dust grains have been studied in detail on the phase shifts raised due to collision. It has been seen that the properties of the cooperation of DASWs in cylindrical and spherical shaped are distinct.

Nonlinear propagation of lower-hybrid-like waves in a dusty plasma

1997 ◽  
Vol 57 (2) ◽  
pp. 299-310 ◽  
Author(s):  
O. P. SAH
Keyword(s):  
Dusty Plasma ◽  
Hot Electrons ◽  
Nonlinear Propagation ◽  
Lower Hybrid ◽  
Charged Dust ◽  
Hot Electron ◽  
Dust Grains ◽  
Mass Ratio ◽  
Nonlinear Structure ◽  
Positively Charged

The existence and properties of nonlinear lower-hybrid-like waves in a dusty plasma are discussed. It is found that both rarefactive and compressive types of solitons can exist in the presence of isothermal hot electrons and negatively charged dust grains. Only compressive solitons are found to occur when the dust grains are positively charged or the hot electrons are non-isothermal. The amplitude, velocity, width and nature of the nonlinear structure are greatly affected by the hot electron concentration as well as by the charge-to-mass ratio of the dust grains.

Effects of polarization force and nonthermal ions on dust-acoustic (DA) shock waves in a strongly coupled dusty plasma with positively charged dust

Open Physics ◽  
2014 ◽  
Vol 12 (11) ◽  
Author(s):  
Shikha Pervin ◽  
Khandaker Ashrafi ◽  
M. Zobaer ◽  
Md. Salahuddin ◽  
A. Mamun
Keyword(s):  
Shock Waves ◽  
Dusty Plasma ◽  
Nonlinear Propagation ◽  
Charged Dust ◽  
Dust Grains ◽  
Strongly Coupled ◽  
Polarization Force ◽  
Dust Acoustic ◽  
Strongly Coupled Dusty Plasma ◽  
Positively Charged

AbstractThe nonlinear propagation of the dust-acoustic (DA) waves in a strongly coupled dusty plasma containing Maxwellian electrons, nonthermal ions, and positively charged dust is theoritically investigated by a Burgers equation. The effects of the polarization force (which arises due to the interaction between electrons and highly positively charged dust grains) and nonthermal ions are studied. DA shock waves are found to exist with positive potential only. It represents that the strong correlation among the charged dust grains is a source of dissipation, and is responsible for the formation of DA shock waves. The effects of polarization force and nonthermal ions significantly modified the basic features of DA shock waves in strongly coupled dusty plasma.

Non-Thermal and Dust Charge Effects on Surface Ion Waves in Semi-Bound Lorentzian Plasmas

2006 ◽  
Vol 61 (7-8) ◽  
pp. 323-329 ◽  
Author(s):  
Jae-Hoon Song ◽  
Young-Dae Jung
Keyword(s):  
Surface Wave ◽  
Phase Velocity ◽  
Spectral Index ◽  
Charged Dust ◽  
Dust Grains ◽  
Charge Effects ◽  
Long Wavelength ◽  
Dust Charge ◽  
Ion Waves ◽  
Positively Charged

The non-thermal and dust charge effects on a surface electrostatic ion plasma wave are investigated in a semi-bound magnetized dusty Lorentzian plasma. The results show that the phase velocity of the surface wave with negatively charged dust grains is greater than that with positively charged dust grains or that with neutral dust grains. It is also found that the phase velocity increases with increasing the spectral index of the plasma. For the long wavelength domain, however, the phase velocity of the surface wave is found to be almost independent of the spectral index.

Self-discharging Of Positively Charged Dust Grains

2011 ◽  
Author(s):  
M. Beránek ◽  
J. Pavlu ◽  
I. Richterová ◽  
J. Vaverka ◽  
J. Šafránková ◽  
...  
Keyword(s):  
Charged Dust ◽  
Dust Grains ◽  
Positively Charged

scholarly journals Generation of magnetic fields in a positive–negative dusty plasma

2007 ◽  
Vol 73 (2) ◽  
pp. 141-144 ◽  
Author(s):  
NITIN SHUKLA ◽  
P.K. SHUKLA ◽  
C.S. LIU ◽  
G.E. MORFILL
Keyword(s):  
Dispersion Relation ◽  
Magnetic Fields ◽  
Dusty Plasma ◽  
Charged Dust ◽  
Hydrodynamic Equations ◽  
Dust Grains ◽  
Physical Explanation ◽  
Linear Dispersion ◽  
Linear Dispersion Relation ◽  
Faraday Law

Abstract.It is shown that purely growing magnetic fields in a two-component dusty plasma can e generated due to the equilibrium drift of positive and negative dust grains. For this purpose, a linear dispersion relation has been derived by using the hydrodynamic equations for the charged dust fluids, the Maxwell equation and Faraday' law. The dispersion relation admits a purely growing instability, the growth rate of which is proportional to the equilibrium streaming speeds of positive and negative dust grains. A possible physical explanation for the instability is offered. Applications of our investigation to magnetic fields in the thin Martian environments, interplanetary spaces and dense molecular clouds are mentioned.

scholarly journals ION ACOUSTIC INSTABILITY IN DUSTY PLASMA

2020 ◽  
pp. 41-46
Author(s):  
Y.V. Susayev ◽  
V.V. Olshansky
Keyword(s):  
Computer Simulation ◽  
Dusty Plasma ◽  
Implicit Scheme ◽  
Implicit Method ◽  
Charged Dust ◽  
Dust Grains ◽  
Acoustic Instability ◽  
Ion Acoustic ◽  
Simulation Results ◽  
Pic Code

The computer simulation results of the ion acoustic instability evolution in the dusty plasma are presented. The dusty plasma consists from electrons, ions, massive charged dust grains and neutral atoms. In the simulation the implicit PIC-code is used. To this code the implicit scheme of particles movement is applied, namely the direct implicit method of Langdon-Fridman. Realization of the algorithm is presented too.

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