Journal ArticleDOI
Nonlinear dust-acoustic wave propagation in a Lorentzian dusty plasma in presence of negative ions
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TLDR
In this article, the effect of the density and temperature of negative ions on the nonlinear dust-acoustic wave propagation in a Lorentzian dusty plasma was studied and an unstable potential has been predicted from this analysis when the negative ion population is high and the dust charge variation is non-adiabatic.Abstract:
In this paper we have studied the effect of the density and temperature of negative ions on the nonlinear dust-acoustic wave propagation in a Lorentzian dusty plasma. We have considered both adiabatic and non-adiabatic dust charge variation. The presence of both low and high populations of negative ions are considered. Separate models have been developed because the two populations give rise to opposite polarity of grain charges. In both models electrons are assumed to follow a kappa velocity distribution while the positive and negative ions satisfy a Maxwellian velocity distribution. Adiabatic dust charge variation shows the propagation of a dust-acoustic soliton in cases of both a high and low population of negative ions whose amplitude depends on the negative ion temperature and negative ion density. On the other hand, non-adiabatic dust charge variation generates a stable oscillatory dust-acoustic shock when the negative ion population is low. An unstable potential has been predicted from this analysis when the negative ion population is high and the dust charge variation is non-adiabatic.read more
Citations
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Dust-Ion-Acoustic Rogue Waves in a Dusty Plasma Having Super-Thermal Electrons
A.A. Noman,Khairul Islam,Mehedi Hassan,Subrata Banik,N. A. Chowdhury,Abdul Mannan,Abdullah Al Mamun +6 more
TL;DR: In this paper, the standard nonlinear Schrodinger equation is used 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.
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Stable Oscillation and Chaotic Motion of the Dust-Acoustic Waves for the KdV–Burgers Equation in a Four-Component Dusty Plasma
TL;DR: In this paper, the authors investigated nonlinear dust-acoustic waves (DAWs) in a four-component unmagnetized electron-ion dusty plasma composed of fluid dust species, the Maxwellian positive, and negative ions with $q$ -nonextensive electrons.
Journal ArticleDOI
Nonlinear dust-acoustic solitary waves and shocks in dusty plasmas with a pair of trapped ions
TL;DR: In this article, the propagation characteristics of small-amplitude dust-acoustic (DA) solitary waves (SWs) and shocks are studied in an unmagnetized dusty plasma with a pair of trapped positive and negative ions.
References
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Journal ArticleDOI
Effect of dust-charge variation on dust acoustic solitary waves in a dusty plasma with trapped electrons
S. K. El-Labany,W. F. El-Taibany +1 more
TL;DR: In this paper, the Sagdeev potential equation has been derived for small-amplitude dust acoustic wave propagation and the effect of variable dust charge, dust temperature and trapped electrons on small amplitude dust acoustic waves is investigated.
Journal ArticleDOI
Chemistry and dynamics of SF6 injections into the F region
TL;DR: In this paper, the chemistry of SF6 vapor reacting in the F region is critically examined, where the SF6 molecule dissociatively attaches an electron, producing the SF5− ion.
Journal ArticleDOI
Adiabatic dust-acoustic waves with dust-charge fluctuations
Satyavir Singh,N. N. Rao +1 more
TL;DR: In this article, the effect of charge fluctuations on the propagation of adiabatic linear and nonlinear dust-acoustic waves was studied by considering the electrons and ions to be in Boltzmann equilibria, and the dust grains to satisfy the fluid equations with full ADIABatic equation of state.
Journal ArticleDOI
Dust acoustic shock wave at high dust density
TL;DR: In this article, the Korteweg-de Vries Burger equation was used to model the nonadiabatic dust charge variation in the DEA (DEA) and DC (DC) wave.
Journal ArticleDOI
Dust acoustic shock wave in electronegative dusty plasma: Roles of weak magnetic field
TL;DR: In this paper, the effects of nonsteady dust charge variations and weak magnetic field on small but finite amplitude nonlinear dust acoustic wave in electronegative dusty plasma are investigated.
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