Small amplitude electron-acoustic solitary waves in a plasma with superthermal hot electrons

Bedi, Chanchal; Chahal, B. S.

doi:10.1007/s10509-012-1323-z

Cited by 5 publications

(1 citation statement)

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“…Such a situation can be caused by a variety of physical phenomena, including the external force field present in the natural space plasma environment, wave particle interaction, turbulence and so on. Cairn's et al [28], suggested a plasma system composed of nonthermal electrons with an abundance of energetic particles and cold ions to explain the density depletion observed by onboard instruments of the Freja and Viking satellites [29]. To explain the findings made by the Freja satellite, Cairn's et al, [30] proposed a nonthermal electron distribution with an abundance of energetic particles.…”

Section: Introductionmentioning

confidence: 99%

Ion temperature gradient mode modulational stability analysis with cairn’s distribution

Khan,

Ullah,

BiBi

et al. 2024

Phys. Scr.

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In this manuscript, we have studied electron-ion plasma with inhomogeneity in ion density and tem perature. Ions are the dynamic species, and lighter particles in plasma obey the cairn's distribution. We introduce Brajinskii's equation for dynamic species and get the linear dispersion relation and the nonlinear Schrodinger equation by the reduction perturbation method. From the linear dispersion relation, we found the mode frequency and phase velocity, while from the nonlinear Schrodinger equation, we obtained the stability and instability of the ion temperature gradient mode modulation. Findings show that phase velocity is dependent on the superthermality coefficient and other plasma parameters like ion temperature, ion density, and mode parameter ηi. Further, the modulational stability and instability of the mode vary with the superthermality coefficient and other plasma parameters, especially the ηi. We can apply these observations equally to the laboratory as well as to the space plasma.

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Section: Introductionmentioning

confidence: 99%