Solitary and freak waves in a dusty plasma with negative ions

2011 ◽  
Vol 18 (9) ◽  
pp. 092305 ◽  
Author(s):  
U. M. Abdelsalam ◽  
W. M. Moslem ◽  
A. H. Khater ◽  
P. K. Shukla
Keyword(s):  
Dusty Plasma ◽  
Negative Ions ◽  
Freak Waves

Dust grain surface potential in a non-Maxwellian dusty plasma with negative ions

2013 ◽  
Vol 79 (6) ◽  
pp. 1117-1121 ◽  
Author(s):  
A. A. ABID ◽  
S. ALI ◽  
R. MUHAMMAD
Keyword(s):  
Dusty Plasma ◽  
Surface Potential ◽  
Density Ratio ◽  
Negative Ions ◽  
Negative Ion ◽  
Plasma Parameters ◽  
Laboratory Plasmas ◽  
Dust Grain ◽  
Grain Surface ◽  
Dust Charging

AbstractDust charging processes involving the collection of electrons and positive/negative ions in a non-equilibrium dusty plasma are revisited by employing the power-law kappa (κ)-distribution function. In this context, the current balance equation is solved to obtain dust grain surface potential in the presence of negative ions. Numerically, it is found that plasma parameters, such as the κ spectral index, the negative ion-to-electron temperature ratio (γ), the negative–positive ion number density ratio (α), and the negative ion streaming speed (U0) significantly modify the dust grain potential profiles. In particular, for large kappa values, the dust grain surface potential reduces to the Maxwellian case, and at lower kappa values the magnitude of the negative dust surface potential increases. An increase in γ and U0 leads to the enhancement of the magnitude of the dust grain surface potential, while α leads to an opposite effect. The relevance of present results to low-temperature laboratory plasmas is discussed.

Dust ion-acoustic solitary waves in a dusty plasma with positive and negative ions

2008 ◽  
Vol 15 (6) ◽  
pp. 063701 ◽  
Author(s):  
F. Sayed ◽  
M. M. Haider ◽  
A. A. Mamun ◽  
P. K. Shukla ◽  
B. Eliasson ◽  
...  
Keyword(s):  
Dusty Plasma ◽  
Solitary Waves ◽  
Negative Ions ◽  
Ion Acoustic Solitary Waves ◽  
Ion Acoustic

Solitary and freak waves in superthermal plasma with ion jet

2012 ◽  
Vol 79 (3) ◽  
pp. 287-294 ◽  
Author(s):  
U. M. ABDELSALAM
Keyword(s):  
Solitary Wave Solution ◽  
Kdv Equation ◽  
Ion Beam ◽  
Negative Ions ◽  
Reductive Perturbation Method ◽  
Dust Particles ◽  
Superthermal Electrons ◽  
Plasma Parameters ◽  
Freak Waves ◽  
Superthermal Plasma

AbstractThe nonlinear solitary and freak waves in a plasma composed of positive and negative ions, superthermal electrons, ion beam, and stationary dust particles have been investigated. The reductive perturbation method is used to obtain the Korteweg-de Vries (KdV) equation describing the system. The latter admits solitary wave solution, while the dynamics of the modulationally unstable wavepackets described by the KdV equation gives rise to the formation of freak/rogue excitation described by the nonlinear Schrödinger equation. In order to show that the characteristics of solitary and freak waves are influenced by plasma parameters, relevant numerical analysis of appropriate nonlinear solutions are presented. The results from this work predict nonlinear excitations that may associate with ion jet and superthermal electrons in Herbig–Haro objects.

Rogue wave triplets in an ion-beam dusty plasma with superthermal electrons and negative ions

2013 ◽  
Vol 377 (34-36) ◽  
pp. 2118-2125 ◽  
Author(s):  
Shimin Guo ◽  
Liquan Mei ◽  
Weijuan Shi
Keyword(s):  
Dusty Plasma ◽  
Rogue Wave ◽  
Ion Beam ◽  
Negative Ions ◽  
Superthermal Electrons

Nonlinear propagation of dust-ion-acoustic solitary waves in an unmagnetized dusty plasma with trapped particle distribution

2015 ◽  
Vol 30 (40) ◽  
pp. 1550216 ◽  
Author(s):  
O. Rahman
Keyword(s):  
Dusty Plasma ◽  
Solitary Waves ◽  
Perturbation Technique ◽  
Negative Ions ◽  
Mkdv Equation ◽  
Finite Amplitude ◽  
Negative Ion ◽  
Nonlinear Propagation ◽  
Ion Distribution ◽  
Ion Acoustic

The nonlinear propagation of dust-ion-acoustic (DIA) solitary waves (SWs) in an unmagnetized four-component dusty plasma containing electrons and negative ions obeying vortex-like (trapped) velocity distribution, cold mobile positive ions and arbitrarily charged stationary dust has been theoretically investigated. The properties of small but finite amplitude DIASWs are studied by employing the reductive perturbation technique. It has been found that owing to the departure from the Maxwellian electron and Maxwellian negative ion distribution to a vortex-like one, the dynamics of such DIASWs is governed by a modified Korteweg–de Vries (mKdV) equation which admits SW solution under certain conditions. The basic properties (speed, amplitude, width, etc.) of such DIASWs are found to be significantly modified by the presence of trapped electron and trapped negative ions. The implications of our results to space and laboratory dusty electronegative plasmas (DENPs) are briefly discussed.

Effect of negative ions on dust-acoustic soliton in a dusty plasma

2005 ◽  
Vol 339 (1-2) ◽  
pp. 96-102 ◽  
Author(s):  
Zheng-Xiong Wang ◽  
Xiaogang Wang ◽  
Li-Wen Ren ◽  
Jin-Yuan Liu ◽  
Yue Liu
Keyword(s):  
Dusty Plasma ◽  
Negative Ions ◽  
Dust Acoustic
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