Low Frequency Solitary Waves in Magnetized Electron–Positron–Ion Plasmas

Mahmood, M. Ansar; Mahmood, S.; Mirza, Arshad M.; Saleem, H.

doi:10.1088/0256-307x/22/3/031

Cited by 23 publications

(14 citation statements)

References 15 publications

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“…Sazonkin 2008, 2013;Baluku et al 2010;Akbari-Moghanjoughi 2010;Mamun and Shukla 2010;Dubinov et al 2011;Verheest 2011 for recent studies). The pseudopotential with two minima also appears in the analyses of electrostatic waves in magnetised electron-positron-ion plasmas (Ansar Mahmood et al 2005), and in the magnetised electron-ion plasma with two oppositely charged ion components (Kaur and Singh Gill 2010). Three minima in the pseudopotential energy for nonlinear dust-acoustic waves in an electron-ion plasma with negatively and positively charged dusty grains, were found in Verheest (2009).…”

Section: Introductionmentioning

confidence: 91%

Above the weak nonlinearity: super-nonlinear waves in astrophysical and laboratory plasmas

Дубинов

Kolotkov

2018

Rev. Mod. Plasma Phys.

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The review summarises recent theoretical achievements and observational manifestations of a new, recently discovered type of nonlinear oscillations in multi-component plasmas, namely super-nonlinear periodic waves and super-nonlinear solitary waves (supersolitons). Both are characterised by a non-trivial topology of their phase portraits, highly anharmonic profile shapes, extremely long periods, and large amplitudes. Based upon multi-fluid magnetohydrodynamic plasma models, examples of ion-acoustic and Alfvén super-nonlinear waves are considered. A multi-component nature of the plasma was revealed to be a crucial condition for the existence of these super-nonlinear waves, with the complexity of the system growing with the number of plasma species accounted for in the model. A minimum number of plasma components which allow for the existence of supernonlinear waves are also discussed. From the observational point of view, typical signatures of periodic super-nonlinear waves are manifested, for example, in the oscillatory processes operating in the magnetised plasma of the solar corona and ground-based plasma machines. Super-nonlinear solitary structures (supersolitons) of an electrostatic origin are recognised in the Earth's magnetosphere, laboratory experiments with chemically active plasmas, and numerical simulations.

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Section: Introductionmentioning

confidence: 91%

Above the weak nonlinearity: super-nonlinear waves in astrophysical and laboratory plasmas

Дубинов

Kolotkov

2018

Rev. Mod. Plasma Phys.

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“…Finally, making use of Eqs. (24), (25) and (6), leads to the following expressions for the overall phase-shift in head-on collision…”

Section: Dynamics Of Head-on Collision and Propagationmentioning

confidence: 99%

Universal characteristics of ion-acoustic wave dynamics in magnetized plasmas with emphasis on Tsallis distribution

Akbari-Moghanjoughi

2011

Astrophys Space Sci

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Using the extended Poincaré-Lighthill-Kuo (PLK) reductive perturbation method, which incorporates the phase-shift variations, it is shown that common features on propagation and head-on collisions of ion-acoustic waves exist for a magnetized plasmas of different inertial-less particle distributions. For instance it is remarked that, the soliton amplitude is always independent of magnetic field strength while strictly depends on its angle regarding the propagation direction.Both types of solitons (compressive or rarefactive) are shown to exist which are defined through the critical angle γ = π/2 or other critical values depending on plasma fractional parameters.These critical plasma parameter values also define the sign of head-on collision phase shift. Furthermore, it is proved that for a given set of plasma parameters there is always a relative angle of propagation regarding to that of the magnetic-field for which the soliton width is maximum. Current findings applies to a wide range of magnetized plasmas including those containing background dust ingredients or two-temperature inertial-less particles and may be used to study laboratory or astrophysical magnetoplasmas.

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“…The nonlinear ionacoustic solitary waves ͑IASWs͒ are well known for their unique features and applications in optical and communication technology. 1 Propagation of IASWs has been extensively studied in weak and strongly nonlinear limits using conventional asymptotic [2][3][4][5][6][7][8][9] and Sagdeev pseudopotential [10][11][12][13][14] techniques in diverse plasma environments. Engineering's recent technological advancements in fabrication of semiconductors, nanodevices, quantum units, and their interesting physical properties 15 have directed many plasma research efforts toward the study of dense plasmas in which the quantum mechanical effects play important role.…”

Section: Introductionmentioning

confidence: 99%

Effects of ion-temperature on propagation of the large-amplitude ion-acoustic solitons in degenerate electron-positron-ion plasmas

Akbari-Moghanjoughi

2010

Physics of Plasmas

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Large-amplitude ion-acoustic solitary wave (IASW) propagation and matching criteria of existence of such waves are investigated in a degenerate dense electron-positron-ion plasma considering the ion-temperature as well as electron/positron degeneracy effects. It is shown that the ion-temperature effects play an important role in the existence criteria and allowed Mach-number range in such plasmas. Furthermore, a fundamental difference is remarked in the existence of supersonic IASW propagations between degenerate plasmas with nonrelativistic and ultrarelativistic electrons and positrons. Current study may be helpful in astrophysical as well as the laboratory inertial confinement fusion-research.

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Low Frequency Solitary Waves in Magnetized Electron–Positron–Ion Plasmas

Cited by 23 publications

References 15 publications

Above the weak nonlinearity: super-nonlinear waves in astrophysical and laboratory plasmas

Above the weak nonlinearity: super-nonlinear waves in astrophysical and laboratory plasmas

Universal characteristics of ion-acoustic wave dynamics in magnetized plasmas with emphasis on Tsallis distribution

Effects of ion-temperature on propagation of the large-amplitude ion-acoustic solitons in degenerate electron-positron-ion plasmas

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