Dissipative dust acoustic solitons in magnetized nonextensive warm dusty plasma

Bhowmick, Shubhra; Sahu, Biswajit

doi:10.1016/j.cjph.2021.10.002

Cited by 2 publications

(1 citation statement)

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“…Dust grains lead to new types of plasma modes, one of which is the low-frequency dust acoustic wave (DAW). [2] A DAW is the analog of an ion acoustic wave (IAW) in the very low-frequency regime, where ion and electron provide pressure and the dust provides the inertia. [3,4] The balance between the inertia and the pressure gives rise to the formation of DAWs.…”

Section: Introductionmentioning

confidence: 99%

Effect of nonthermal and nonextensive electrons on dust acoustic waves in planetary rings

Li,

Gao,

Fan

et al. 2024

Contrib. Plasma Phys

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Dust acoustic waves (DAWs) in plasmas are influenced by many plasma parameters, such as, ion temperature, electron number density, nonthermal and nonextensive parameters, and dust cyclotron frequency. The plasma system is described by plasma fluid equations. The Zakharov–Kuznetsov equation and instability growth rate of DAWs have been obtained by reductive perturbation method and small‐ expansion method, respectively. The effects of plasma parameters on the linear dispersion relation, phase velocity, amplitude, width, soliton energy, and three‐dimensional instability of DAWs have been carried out. It is obvious that the incremental nonextensive (nonthermal) parameter leads to the shrinking (incremental) soliton energy and phase velocity. These results are useful for understanding dusty plasma dynamics with Cairns–Tsallis electrons in planetary rings.

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Section: Introductionmentioning

confidence: 99%

Effect of nonthermal and nonextensive electrons on dust acoustic waves in planetary rings

Li,

Gao,

Fan

et al. 2024

Contrib. Plasma Phys

View full text Add to dashboard Cite

show abstract

Solitary waves dissipation in pair-ion plasmas for (r, q)-distributed electrons

et al. 2022

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Solitary waves in a symmetric pair-ion plasma are studied as affected by various plasma parameters, e.g., electron density, collision frequency, ion temperatures, ( r, q)-distributed electrons. In this regard, plasma fluid equations have been used to simulate the plasma system for which a reductive perturbation technique is applied to derive the relevant damped Korteweg–de Vries equation. The effects of spectral indices, collision frequency, ion-electron temperature ratios, and density on the time evolution of perturbed potential profile have been illustrated and benchmarked with Boltzmann distributed electrons. It is observed that the nonthermal population significantly affects the soliton amplitude, which increases with r and q. Furthermore, it also grows with electron density and ion temperature; however, there is a in the slowing down rate in the case of the latter. An increase in the collision frequency leads to faster damping in both the amplitude and speed of the solitary potential profiles. This work will be useful in the determination of plasma dynamics for pair-ion plasma systems containing nonthermal electrons, especially with flat-topped distribution functions, e.g., as found in Earth's magnetosheath and magnetotail, as well as in laboratory experiments with the fullerene plasma. To the best of our knowledge, a general description for pair ion plasmas using (r, q) distribution has never been reported. This study can explore a huge variety of velocity distribution functions—via the two index nonthermal parameters, in contrast to single index counterparts.

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Dissipative dust acoustic solitons in magnetized nonextensive warm dusty plasma

Cited by 2 publications

References 50 publications

Effect of nonthermal and nonextensive electrons on dust acoustic waves in planetary rings

Effect of nonthermal and nonextensive electrons on dust acoustic waves in planetary rings

Solitary waves dissipation in pair-ion plasmas for (r, q)-distributed electrons

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