A specific property of electromagnetic waves interacting with dust-laden plasma

Цинцадзе, Н. Л.; Ehsan, Zahida; Shah, H. A.; Murtaza, G.

doi:10.1063/1.2219740

Cited by 24 publications

(13 citation statements)

References 32 publications

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“…To study the stability, we shall use in Eq. ͑25͒ the Madelung's representation of the complex amplitude of the circularly polarized electromagnetic wave, 30,31 = a͑,t͒e i͑,t͒ , where the amplitude a͑ , t͒ and the phase are real quantities. Substituting Eq.…”

Section: Modulational Instability Of the Schrödinger Equationmentioning

confidence: 99%

Acceleration of soliton by nonlinear Landau damping of dust-helical waves

et al. 2009

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The problem of nonlinear Landau damping of helicon waves in dusty plasma in particular emphasis to the acceleration of soliton is presented here. This in the framework of a collisionless, anisotropic homogeneous dusty plasma in one dimension, can be well described by two coupled dynamical equations of the generalized Zakharov type, with one extra nonlocal term coming from Landau damping. Nonlinear-nonlocal term gives rise to essential contributions relative to the local term. Then under different conditions, kinetic nonlinear Schrödinger equation is constructed and nonlinear decrement is obtained for two cases. It is noticed that the time dependant term in the ponderomotive force plays a significant role for this kind of damping. Additionally, it is shown that nonlinear Landau damping leads to the amplitude modulation of dust helicon waves, further modulational instability, and maximal growth rate is obtained when the group velocity of the helicon wave reaches the dust-acoustic speed. It is demonstrated that how the nonlinear Landau damping leads to the acceleration of soliton, which is eventually slowed down after transferring some of its energy to the wave. Emission of dust-acoustic wave by accelerated soliton is discussed briefly.

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Section: Modulational Instability Of the Schrödinger Equationmentioning

confidence: 99%

Acceleration of soliton by nonlinear Landau damping of dust-helical waves

et al. 2009

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“…is the sound speed in a relativistically hot pair plasma, σ = 4π 2 /45h 3 c 3 , andh is the Planck constant divided by 2π. A similar system has been previously derived for a cold plasma [24], and recently for a warm dust-laden plasma [25].…”

mentioning

confidence: 63%

Kinetic theory for radiation interacting with sound waves in ultrarelativistic pair plasmas

2006

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A kinetic theory for radiation interacting with sound waves in an ultrarelativistic electron-positron plasma is developed. It is shown that the effect of a spatial spectral broadening of the electromagnetic pulse is to introduce a reduction of the growth rates for the decay and modulational instabilities. Such spectral broadening could be due to a finite pulse coherence length, or through the use of random phase filters, and would stabilize the propagation of electromagnetic pulses.The physics of electron-positron plasmas is important for understanding the pulsar environments [1, 2] and laboratory plasmas irradiated by intense lasers [3,4], where quantum field effects come into play [5]. Pair plasmas are also believed to be important in the early universe, in supernova remnants and active galactic nuclei, and in gamma-ray bursts [6,7].A pair plasma can be created in these environments by collisions between strongly accelerated particles [8]. There is also a possibility of pair creation via high-energy curvature radiation photons in the vicinity of strongly magnetized astrophysical objects, triggered by charged particles streaming along the curved magnetic field [9]. This results in large quantities of positrons produced close to pulsar polar caps [10,11]. In laboratory environments, laser experiments with focal spot intensities exceeding 10 20 W/cm 2 have demonstrated the production of MeV electrons and evidence of positrons via laser multiphoton-gamma photon interactions [12,13] as well as via electron collisions [14,15].When the intensity of the radiation is increased, the pair plasma particles attain rela- * Electronic address: mattias.marklund@physics.umu.se; Also at

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“…This kind of instability has potential applications in non‐linear optics (lasers, self‐focusing, non‐linear radio waves, etc. ), hydrodynamics, electromagnetics, etc …”

Section: Introductionmentioning

confidence: 99%

“…), hydrodynamics, electromagnetics, etc. [33][34][35][36][37][38][39][40][41] ; that is why a large amount of work has been devoted to this.…”

mentioning

confidence: 99%

Modulation instability of lower hybrid waves leading to cusp solitons in electron–positron(hole)–ion Thomas Fermi plasma

Ehsan

Цинцадзе

Fedele

et al. 2019

Contributions to Plasma Physics

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Following the idea of three‐wave resonant interactions of lower hybrid waves, it is shown that quantum‐modified lower hybrid (QLH) wave in electron–positron–ion plasma with spatial dispersion can decay into another QLH wave (where electron and positrons are activated, whereas ions remain in the background) and another ultra‐low frequency quantum‐modified ultra‐low frequency Lower Hybrid (QULH) (where ions are mobile). Quantum effects like Bohm potential and Fermi pressure on the lower hybrid wave significantly reshaped the dispersion properties of these waves. Later, a set of non‐linear Zakharov equations were derived to consider the formation of QLH wave solitons, with the non‐linear contribution from the QLH waves. Furthermore, modulational instability of the lower hybrid wave solitons is investigated, and consequently, its growth rates are examined for different limiting cases. As the growth rate associated with the three‐wave resonant interaction is generally smaller than the growth associated with the modulational instability, only the latter have been investigated. Soliton solutions from the set of coupled Zakharov and NLS equations in the quasi‐stationary regime have been studied. Ordinary solitons are an attribute of non‐linearity, whereas a cusp soliton solution featured by nonlocal nonlinearity has also been studied. Such an approach to lower hybrid waves and cusp solitons study in Fermi gas comprising electron positron and ions is new and important. The general results obtained in this quantum plasma theory will have widespread applicability, particularly for processes in high‐energy plasma–laser interactions set for laboratory astrophysics and solid‐state plasmas.

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A specific property of electromagnetic waves interacting with dust-laden plasma

Cited by 24 publications

References 32 publications

Acceleration of soliton by nonlinear Landau damping of dust-helical waves

Acceleration of soliton by nonlinear Landau damping of dust-helical waves

Kinetic theory for radiation interacting with sound waves in ultrarelativistic pair plasmas

Modulation instability of lower hybrid waves leading to cusp solitons in electron–positron(hole)–ion Thomas Fermi plasma

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