Dust-lower-hybrid instability with fluctuating charge in quantum plasmas

Jamil, Muhammad; Ali, Mohsen; Rasheed, A.; Zubia, K.; Salimullah, M.

doi:10.1063/1.4914167

Cited by 16 publications

(4 citation statements)

References 47 publications

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“…Very recently, the wave probation and instability have been extensively explored in quantum dusty plasmas (Jamil et al. 2014, 2015) including the quantum-mechanical effects. Hence, the quantum-mechanical and nonlinear ion wake-field effects on the dust-lattice wave in complex quantum dusty plasmas will be treated elsewhere.…”

Section: Resultsmentioning

confidence: 99%

Effects of nonlinear plasma wake field on the dust-lattice wave in complex plasmas

Lee

Jung

2017

J. Plasma Phys.

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The influence of a nonlinear ion wake field on the dust-lattice wave is investigated in complex dusty plasmas. The dispersion relation for the dust-lattice wave is derived from the equation of motion including the contribution due to the nearest-neighbour dust grain interaction. The results show that the nonlinear wake-field effect increases the wave frequency, especially at the maximum peak positions. It is found that the oscillatory behaviour of the dust-lattice wave enhances with an increase of the spacing of the dust grains. It is also found that the amplitude of the dust-lattice wave significantly decreases with an increase of the inter-dust grain distance. In addition, it is found that the amplitude of the dust-lattice wave increases with increasing Debye length. The variation of the dust-lattice wave due to the Mach number and plasma parameters is also discussed.

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Section: Resultsmentioning

confidence: 99%

Effects of nonlinear plasma wake field on the dust-lattice wave in complex plasmas

Lee

Jung

2017

J. Plasma Phys.

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“…Hence, it is expected that the simple analytic expressions of Equations (10), (12) and (13) provide the statistical averaged information contents for atomic states in strongly coupled plasma. Very recently, the thermodynamic properties of degenerate electron systems have been extensively explored, including the quantum phenomena such as the electron exchange-correlation, quantum diffraction, and quantum recoil effects [ 12 , 13 , 14 , 15 , 16 , 17 , 18 ]. Hence, the Shannon information entropy for atomic data investigated in degenerate quantum plasma will also be explored elsewhere.…”

Section: Theory and Calculationsmentioning

confidence: 99%

Characteristics of Shannon’s Information Entropy of Atomic States in Strongly Coupled Plasma

Lee

Jung

2020

Entropy

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The influence of shielding on the Shannon information entropy for atomic states in strong coupled plasma is investigated using the perturbation method and the Ritz variational method. The analytic expressions for the Shannon information entropies of the ground (1s) and the first excited states (2p) are derived as functions of the ion-sphere radius including the radial and angular parts. It is shown that the entropy change in the atomic state is found to be more significant in the excite state than in the ground state. It is also found that the influence of the localization on the entropy change is more significant for an ion with a higher charge number. The variation of the 1s and 2p Shannon information entropies are discussed.

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“…For example, Ref. [39] used the following "typical parameters...for the interiors of the neutron stars, the magnetars, and the white dwarfs...": a dust density of 10 18 cm −3 and a dust radius a d ∼ 10 −5 cm. One readily verifies that, at this density, the mean nearest neighbor distance of two dust particles is less than 10 −6 cm, i.e., more than an order of magnitude smaller than the dust radius.…”

Section: Test Of Quantum Dusty Plasma Parameters Used In the Literaturementioning

confidence: 99%

“…The work [8] has been followed by a large number of papers on QDP that were dedicated to important plasma physics phenomena, such as the Jeans instability [9][10][11][12][13][14], different types of dust ion acoustic waves , the dust-lower-hybrid instability [38,39], new low-frequency oscillations [40], plasma waves and instabilities under a gravitational field [41,42], screening effects [43], and nonlinear ion acoustic waves [44]. These and related studies demonstrated that the inclusion of charged dust particles leads to a broad set of waves and oscillations that is much richer than in "ordinary" electron-ion quantum plasmas (see e.g.…”

Section: Introductionmentioning

confidence: 99%

A critique of "quantum dusty plasmas"

Moldabekov¹,

Bönitz²,

Ramazanov³

2019

Preprint

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During the recent decade a steadily increasing number of papers devoted to so-called "quantum dusty plasmas" (QDP) appeared. These systems are combining the properties of dusty (i.e. micrometer to nanometer-sized particles containing) plasmas with quantum effects appearing at high-density and/or low-temperature. Many exciting properties of QDP were predicted including nontrivial collective oscillations and linear and nonlinear waves. It was predicted that the results have relevance for dense astrophysical plasmas such as white dwarf stars, neutron stars, magnetars and laboratory plasmas in micro-and nano-devices. Here we present a careful examination of the plasma parameters for the expected applications and compare them to the conditions under which a dust particle can exist in a quantum plasma. The conclusion is that quantum dusty plasmas do not exist in reality.

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Dust-lower-hybrid instability with fluctuating charge in quantum plasmas

Cited by 16 publications

References 47 publications

Effects of nonlinear plasma wake field on the dust-lattice wave in complex plasmas

Effects of nonlinear plasma wake field on the dust-lattice wave in complex plasmas

Characteristics of Shannon’s Information Entropy of Atomic States in Strongly Coupled Plasma

A critique of "quantum dusty plasmas"

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