Kinetic Alfvén waves in a homogeneous dusty magnetoplasma with dust charge fluctuation effects

Zubia, K.; Rubab, N.; Shah, H. A.; Salimullah, M.; Murtaza, G.

doi:10.1063/1.2710457

Cited by 21 publications

(9 citation statements)

References 23 publications

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“…We solve the Vlasov equation for hot and magnetized electrons in terms of the guiding center coordinates and get the perturbed distribution for any electromagnetic wave, 37,38 …”

Section: Basic Assumptionsmentioning

confidence: 99%

Kinetic Alfvén wave instability in a Lorentzian dusty magnetoplasma

et al. 2010

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This study presents a theoretical approach to analyze the influence of kappa distributed streaming ions and magnetized electrons on the plasma wave propagation in the presence of dust by employing two-potential theory. In particular, analytical expressions under certain conditions are derived for various modes of propagation comprising of kinetic Alfvén wave streaming instability, two stream instability, and dust acoustic and whistler waves. A dispersion relation for kinetic Alfvén-like streaming instability has been derived. The effects of dust particles and Lorentzian index on the growth rates and the threshold streaming velocity for the excitation of the instability are examined. The streaming velocity is observed to be destabilizing for slow motion and stabilizing for fast streaming motions. It is also observed that the presence of magnetic field and superthermal particles hinders the growth rate of instability. Possible applications to various space and astrophysical situations are discussed.

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“…We solve the Vlasov equation for hot and magnetized electrons in terms of the guiding center coordinates and get the perturbed distribution for any electromagnetic wave, 37,38 …”

Section: Basic Assumptionsmentioning

confidence: 99%

Kinetic Alfvén wave instability in a Lorentzian dusty magnetoplasma

et al. 2010

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“…In a collisional dusty plasma the damping rate is found to be proportional to the collision frequency between dust and ions (Yang et al, 2012). It has been shown by many authors (Khan et al, 2013;Zubia et al, 2007) that the collisionless Landau damping is negligibly small for nearly perpendicular propagation (small k ), while dust charge fluctuation damping is the main mechanism for the damping of kinetic Alfvén waves, which could be a reason for plasma heating. de Juli et al (2005) also explained that the Landau damping is negligible for the transverse ordinary Alfvén waves propagating parallel to the magnetic field.…”

Section: Damping Of Kinetic Alfvén Wavesmentioning

confidence: 99%

Alfvén waves in space and astrophysical dusty plasmas

Jatenco‐Pereira¹,

Chian

Rubab

2014

Nonlin. Processes Geophys.

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Abstract. In this paper, we present some results of previous works on Alfvén waves in a dusty plasma in different astrophysical and space regions by taking into account the effect of superthermal particles on the dispersive characteristics. We show that the presence of dust and superthermal particles sensibly modify the dispersion of Alfvén waves. The competition between different damping processes of kinetic Alfvén waves and Alfvén cyclotron waves is analyzed. The nonlinear evolution of Alfvén waves to chaos is reviewed. Finally, we discuss some applications of Alfvén waves in the auroral region of space plasmas, as well as stellar winds and star-forming regions of astrophysical plasmas.

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“…For example, effects of dust charge fluctuations on the Langmuir waves (Ma and Yu 1994a) and dust ionacoustic waves (Ma and Yu 1994b) have been investigated. The kinetic Alfven waves (Zubia et al 2007) and dustlower-hybrid waves (Salimullah et al 2003) have been studied taking into account dust charge fluctuations. Effects of uniform magnetic field, the plasma inhomogeneity, and the dust charge fluctuations on the drift waves have been investigated in a nonuniform dusty magnetoplasma (Salimullah et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Kinetic effects of the dust charge fluctuations on the instability of dust ion-acoustic waves

Rouhani

Jamshidi

Pajouh

2015

Astrophys Space Sci

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In this paper, a kinetic description is used to derive the perturbed dust grain currents carried by the plasma particles, taking into account dust charge fluctuations. The longitudinal dielectric permittivity and the dispersion relation of dust ion-acoustic waves in an unmagnetized dusty plasma are obtained. It is shown that the dust charge fluctuations effectively modify the damping rate of these waves, which can lead to an excitation of instability in plasma. This instability is due to the thermal velocity of the plasma particles and dust charge fluctuations. It is different from the instability due to the drift speed of the plasma particles. It is found that there is a critical wave number above which these waves are unstable. In addition, the growth rate of these waves is numerically investigated for different plasma parameters. The present theory is applicable in astronomers and space scientists working on dusty plasmas, especially planetary ring systems and cometary tails, where dust charge fluctuations are important.

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Kinetic Alfvén waves in a homogeneous dusty magnetoplasma with dust charge fluctuation effects

Cited by 21 publications

References 23 publications

Kinetic Alfvén wave instability in a Lorentzian dusty magnetoplasma

Kinetic Alfvén wave instability in a Lorentzian dusty magnetoplasma

Alfvén waves in space and astrophysical dusty plasmas

Kinetic effects of the dust charge fluctuations on the instability of dust ion-acoustic waves

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