Dust-acoustic solitary waves and double layers with two temperature ions in a nonextensive dusty plasma

Saini, N. S.; Kohli, Ripin

doi:10.1007/s10509-013-1578-z

Cited by 22 publications

(10 citation statements)

References 59 publications

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“…Recently, Tasnim et al [19], [20] have studied the effects of two-temperature nonthermal ions on DA solitary and shock structures, respectively, in dusty plasmas. Saini and Kohli [38] have theoretically observed the effects of two-temperature nonextensive ions on SWs and double layer structures in dusty plasmas. Besides, Dorranian and Sabetkar [44] have studied the properties of DA solitons considering a dusty plasma system containing two kinds of nonthermal ion species at different temperatures deriving the Kadomtsev-Petviashivili equation.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, most of the theoretical works on the shockwaves (SHWs) [10], [45]- [47] in a dusty plasma are based on single temperature Maxwellian or nonMaxwellian ions, following either nonthermal or nonextensive distribution. Therefore, for understanding a more generalized situation in space (viz., stellar polytropes [24], peculiar velocity distributions of galaxies [25], collisionless thermal plasma [26], [27], and magnetosphere [30]) and different laboratory plasmas [38], interest has been generated in investigating the basic features of a system containing two temperature ions following nonextensive and nonthermal distributions [40], respectively. Here, in our considered model, the macroscopic thermodynamic equilibrium attains to that situation, where the different species occupy different regions of the phase space, as discussed in [42].…”

Section: Introductionmentioning

confidence: 99%

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Dust-Acoustic Shockwaves in Nonthermal Dusty Plasmas With Two Population Ions

Tasnim

Masud

Anowar

et al. 2015

IEEE Trans. Plasma Sci.

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A rigorous theoretical investigation has been made on dust-acoustic (DA) shock structures in an unmagnetized dusty plasma system whose constituents are negatively charged cold mobile dust fluid, electrons following Boltzmann distribution, and positively charged ions of two distinct temperatures following nonextensive (q) and nonthermal distributions, respectively. In this paper, the Burgers' equation has been derived by employing reductive perturbation technique which is valid for small but finite amplitude limit. It is observed that both the nonextensive and nonthermal ions of two distinct temperatures and dust kinematic viscosity significantly modify the basic properties (amplitudes, width, and polarities) of the DA shockwaves (DASHWs). The effects of low (high) temperature ions following nonextensive (nonthermal) and dust kinematic viscosity on DASHWs are examined both analytically and numerically. The implications of these results to some astrophysical environments and space plasmas (e.g., stellar polytropes, peculiar velocity distributions of galaxies, and collisionless thermal plasma), and laboratory dusty plasma systems are briefly mentioned. IndexTerms-Dust-acoustic shockwaves (DASHWs), nonthermal ions, two-temperature ions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dust-Acoustic Shockwaves in Nonthermal Dusty Plasmas With Two Population Ions

Tasnim

Masud

Anowar

et al. 2015

IEEE Trans. Plasma Sci.

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“…It gives a measure of the thermo-gravitation coupling [13,14], as q = 1 + (∂ x U t /∂ x U g ); where U t is the randomizing thermal (kinetic) energy and U g is the organizing gravitational (potential) energy of a constitutive particle. The nonextensivity parameter plays an important role in shaping the propagatory features of wave structures, such as the Mach number, polarity, pulse width, and so forth [16,17]. As far as seen, nobody has, however, so far reported the behaviour of the PMGC in a complex non-thermal nonextensive viscous astrocloud and the subsequent structure formation processes.…”

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confidence: 99%

Pulsational mode behaviour in complex non-extensive non-thermal viscous astrophysical fluids

Bhakta

Gohain

Karmakar

2017

EPL

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A semi-analytic evolutionary model is classically constructed to see the pulsational mode dynamics of gravitational collapse in a hydrostatically bounded complex non-thermal astrocloud on the Jeans scales of space and time. The multi-fluidic model consists of non-extensive electrons and ions, and massive dust grains along with partial ionization in flat space-time. A linear Fourier-based normal mode analysis around the defined static (homogeneous) equilibrium reduces the basic cloud equations into a quartic (biquadratic) dispersion relation with a unique set of multi-parametric coefficients. It is interestingly found that non-thermal associations in the cloud pave the way for faster normal mode propagation. The neutral dust viscosity plays a decisive role towards a transition of the pulsational mode from a non-dispersive to a dispersive form. It is also observed that the viscosity has a stabilizing influence on the cloud. The dust-charge variation is noted to play an insignificant role on the stability. The results may be significant in understanding the dynamic non-homological cloud collapse leading to a hierarchical initiation of a bounded structure formation in diverse astro-cosmic anti-equilibrium environs.

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“…employing the Tsallis distribution have been reported in the literature. [57][58][59][60][61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76] Tribeche and Djebarni 58 studied the arbitrary amplitude ion acoustic solitary waves in a two component plasma with a q nonextensive electron velocity distribution in the frame work of Sagdeev theory. The nonextensivity of electrons modified the Mach number which is smaller (greater) for the range q c > 1(À1 < q c < 1) than its Maxwellian counterpart.…”

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confidence: 99%

Ion acoustic solitary waves and double layers in a plasma with two temperature electrons featuring Tsallis distribution

Shalini

Saini

2014

Physics of Plasmas

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The propagation properties of large amplitude ion acoustic solitary waves (IASWs) are studied in a plasma containing cold fluid ions and multi-temperature electrons (cool and hot electrons) with nonextensive distribution. Employing Sagdeev pseudopotential method, an energy balance equation has been derived and from the expression for Sagdeev potential function, ion acoustic solitary waves and double layers are investigated numerically. The Mach number (lower and upper limits) for the existence of solitary structures is determined. Positive as well as negative polarity solitary structures are observed. Further, conditions for the existence of ion acoustic double layers (IADLs) are also determined numerically in the form of the critical values of qc, f and the Mach number (M). It is observed that the nonextensivity of electrons (via qc,h), concentration of electrons (via f) and temperature ratio of cold to hot electrons (via β) significantly influence the characteristics of ion acoustic solitary waves as well as double layers.

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Dust-acoustic solitary waves and double layers with two temperature ions in a nonextensive dusty plasma

Cited by 22 publications

References 59 publications

Dust-Acoustic Shockwaves in Nonthermal Dusty Plasmas With Two Population Ions

Dust-Acoustic Shockwaves in Nonthermal Dusty Plasmas With Two Population Ions

Pulsational mode behaviour in complex non-extensive non-thermal viscous astrophysical fluids

Ion acoustic solitary waves and double layers in a plasma with two temperature electrons featuring Tsallis distribution

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