Solar wind driven dust acoustic instability with Lorentzian kappa distribution

Arshad, Kashif; Ehsan, Zahida; Khan, S. A.; Mahmood, S.

doi:10.1063/1.4865573

Cited by 30 publications

(31 citation statements)

References 28 publications

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“…Liu and Du 25 investigated the dust acoustic instability driven by drifting ions and electrons in dusty plasma, and obtained that the instability growth rate is dependent on the suprathermal index sensitively by postulating that its three components (electrons, ions, and dust grains) obeyed Kappa distribution. Furthermore, Arshad et al 26 shown the solar wind driven dust acoustic instability with Lorentzian Kappa distribution. One could see that the suprathermal particles do have a significant influence on various plasma physical phenomena.…”

Section: Introductionmentioning

confidence: 99%

Modified Jeans instability in Lorentzian dusty self-gravitating plasmas with Lennard-Jones potential

2014

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The Jeans instability in self-gravitating plasma with Kappa distributed dust grains is investigated basing on assumption that the mutual interaction among dust grains is governed by Lennard-Jones potential. It is shown that the presence of additional suprathermal particles has significant effects on the range of unstable modes and growth rate of Jeans instability. Compared with Maxwellian scenario, suprathermality stabilized the Jeans instability. V C 2014 AIP Publishing LLC.

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Section: Introductionmentioning

confidence: 99%

Modified Jeans instability in Lorentzian dusty self-gravitating plasmas with Lennard-Jones potential

2014

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“…[1][2][3][4] One of the common examples of such permeating plasmas in a solar atmosphere is the continuous propagation of plasma streams from the lower layers towards and through solar corona. The interpenetration of plasma species can take place, and consequently, one type of plasma species permeates the other.…”

Section: Introductionmentioning

confidence: 99%

“…Such situations are commonly found in the solar and stellar atmosphere: collisions of astrophysical clouds and plasma generated from novae and supernovae explosions permeating in surrounding (background plasmas). [4] More than two decades ago, Allen et al [9] computed the orbital angular momentum (OAM) of photon states associated with Laguerre-Gaussian (LG) laser beams. An interesting application of permeating plasmas is the presence of solar wind plasma penetrating the cometary plasmas.…”

Section: Introductionmentioning

confidence: 99%

Kinetic instability of twisted excitations in permeating plasma environments

Bukhari

Khan

Ali

2018

Contributions to Plasma Physics

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Twisted ion-acoustic excitations and the existence of kinetic instability are investigated in this study, accounting for finite orbital angular momentum states. For this purpose, a quasi-neutral electron-ion plasma is considered, which permeates through another (target) plasma. The Vlasov-Poisson model is used to obtain explicit expressions for wave dispersion and kinetic instability, including the contributions from the orbital angular momentum. It is shown that the existence of instability is a result of the exceeding electron speed as compared to the ion-acoustic speed, with a strong contribution of twist in the wave. Furthermore, it is found that a planner ion-acoustic wave propagates as a slow wave in comparison with the non-planar (twisted) wave. The results are analysed numerically for typical plasmas found in space and astrophysical environments.

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“…But most of the space plasmas and in some laboratory experiments the charged particles have shown non-Maxwellian or non-thermal distribution of particles. [31][32][33] These non-thermal charged particles in most of the cases are electrons that can be described well by using generalized Lorentzian or kappa (non-Maxwellian) distribution function. 34 In this manuscript, kinetic theory is applied to study the ion acoustic waves in the presence of electric field carrying orbital angular momentum in a plasma containing Maxwellian ions and non-Maxwellian electrons described by the Maxwellian and generalized Lorentzian or kappa distribution functions.…”

Section: Introductionmentioning

confidence: 99%

Kinetic study of ion acoustic twisted waves with kappa distributed electrons

2016

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The kinetic theory of Landau damping of ion acoustic twisted modes is developed in the presence of orbital angular momentum of the helical (twisted) electric field in plasmas with kappa distributed electrons and Maxwellian ions. The perturbed distribution function and helical electric field are considered to be decomposed by Laguerre-Gaussian mode function defined in cylindrical geometry. The Vlasov-Poisson equation is obtained and solved analytically to obtain the weak damping rates of the ion acoustic twisted waves in a non-thermal plasma. The strong damping effects of ion acoustic twisted waves at low values of temperature ratio of electrons and ions are also obtained by using exact numerical method and illustrated graphically, where the weak damping wave theory fails to explain the phenomenon properly. The obtained results of Landau damping rates of the twisted ion acoustic wave are discussed at different values of azimuthal wave number and non-thermal parameter kappa for electrons.

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Solar wind driven dust acoustic instability with Lorentzian kappa distribution

Cited by 30 publications

References 28 publications

Modified Jeans instability in Lorentzian dusty self-gravitating plasmas with Lennard-Jones potential

Modified Jeans instability in Lorentzian dusty self-gravitating plasmas with Lennard-Jones potential

Kinetic instability of twisted excitations in permeating plasma environments

Kinetic study of ion acoustic twisted waves with kappa distributed electrons

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