The effect of positive dust mass on instability in four-component magnetodustyplasma in the presence of polarization force

Emamuddin, M.; Mamun, A. A.

doi:10.1007/s12043-014-0827-1

Cited by 5 publications

(3 citation statements)

References 45 publications

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“…The plasma species (electrons, ions and dust grains) follow the quasi-neutrality condition -= n n Z n e i d d with n j ( j=electron, ion and dust) is the number density of the plasma species and Z d (=Q e, / Q is the dust charge number and e is the electron charge)is the number of electrons present on the dust grain surface. In the present case, we have taken positively charged dust grains whereas for negatively charged dust Z d will be negative [40,42]. In addition, we study a plasma system comprising of Maxwellian distributed ions and electrons and the full hydrodynamic equations of dust grains where the dust charge is not constant.…”

Section: Theoretical Model Equationsmentioning

confidence: 99%

“…They showed that polarization force and the charge gradient force get coupled with the compressional viscoelastic wave mode in the kinetic regime. The dust grains can be found either positively charged or negatively charged or both along with the sufficient amount of neutrals in background [42]. In various space and laboratory plasma systems the presence of positively charged dust with negative dust grains has been established.…”

Section: Introductionmentioning

confidence: 99%

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The effect of dust charge-gradient and dust polarization forces on the Jeans instability in a collisional magnetized dusty plasma

Sharma¹,

Jain²,

Xavier³

2021

Phys. Scr.

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A theoretical investigation of Jeans instability has been done incorporating dust charge gradient and dust polarization forces in a collisional magnetized dusty plasma. The dispersion relation is derived using three fluid theory by employing Boltzmann distribution of ions and electrons and retaining the complete dynamics of positively charged dust. To signify the effects of each parameter on Jeans instability the obtained general dispersion relation is further deduced considering parallel and perpendicular modes of propagation. It has been analyzed analytically as well as numerically that the growth rate of gravitational instability decreases with simultaneous presence of charge gradient force, collision frequency, thermal velocity and external magnetic field, but increases with the dust polarization force. The existence of dust charge gradient force and dust polarization force (along with external magnetic field) have been found to improve the criterion for Jeans instability. The relevance of the work to the collapse of dusty clouds has been discussed.

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Section: Theoretical Model Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effect of dust charge-gradient and dust polarization forces on the Jeans instability in a collisional magnetized dusty plasma

Sharma¹,

Jain²,

Xavier³

2021

Phys. Scr.

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“…This work will be helpful to describe the relaxed structures in different regions of space such as comentary tails [22,37], Jupiter's magnetosphere [22,39], and mesosphere [36]. The plasma model in our manuscript can be used for astrophysical plasmas as well as for experimental observations [74][75][76] that have the same conditions (a magnetized dusty plasmas with electrons, ions, positively and negatively charged dust fluid).…”

Section: Introductionmentioning

confidence: 99%

The possibility of relaxation in Quadruple Beltrami states in a four-component magneto dusty plasma

Gondal¹,

Iqbal²

2020

Phys. Scr.

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The possibility of relaxation in Quadruple Beltrami states for a system of dusty plasma of opposite polarity dust particles, electrons, and ions has been investigated. The macroscopic magnetic field structures are investigated in alliance with the differential flows of electrons, ions, positively and negatively charged dust grains. For a certain set of Beltrami parameters, it is observed that the system self-organized to Quadruple Beltrami state which is characterized by four eigenvalues. To derive Quadruple Beltrami equation, two different cases are assumed. The system allows a fully diamagnetic structure by considering all the inertial forces. The development of paramagnetic and diamagnetic structures has been observed by just ignoring the inertial effects of electrons. It has been shown that the features (paramagnetic or diamagnetic) of the relaxed structures are significantly modified by the eigenvalues and masses of the oppositely charged dust particles.

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Influence of dust charge fluctuation and polarization force on radiative condensation instability of magnetized gravitating dusty plasma

Prajapati

Bhakta

2015

Physics Letters A

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The effect of positive dust mass on instability in four-component magnetodustyplasma in the presence of polarization force

Cited by 5 publications

References 45 publications

The effect of dust charge-gradient and dust polarization forces on the Jeans instability in a collisional magnetized dusty plasma

The effect of dust charge-gradient and dust polarization forces on the Jeans instability in a collisional magnetized dusty plasma

The possibility of relaxation in Quadruple Beltrami states in a four-component magneto dusty plasma

Influence of dust charge fluctuation and polarization force on radiative condensation instability of magnetized gravitating dusty plasma

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