Journal ArticleDOI
Nonlinear electron-acoustic waves in quantum plasma
O. P. Sah,J. Manta +1 more
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In this article, the nonlinear wave structure of EAWs is investigated in a three component unmagnetized dense quantum plasma consisting of two distinct groups of electrons (one inertial cold electron, and other inertialess hot electrons) and immobile ions.Abstract:
The nonlinear wave structure of electron-acoustic waves (EAWs) is investigated in a three component unmagnetized dense quantum plasma consisting of two distinct groups of electrons (one inertial cold electron, and other inertialess hot electrons) and immobile ions. By employing one dimensional quantum hydrodynamic model and standard reductive perturbation technique, a Korteweg–de-Vries equation governing the dynamics of EAWs is derived. Both compressive and rarefactive solitons along with periodical potential structures are found to exist for various ranges of dimensionless quantum parameter H. The quantum mechanical effects are also examined numerically on the profiles of the amplitude and the width of electron-acoustic solitary waves. It is observed that both the amplitude and the width of electron-acoustic solitary waves are significantly affected by the parameter H. The relevance of the present investigation to the astrophysical ultradense plasmas is also discussed.read more
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Electron-acoustic solitary waves in a relativistically degenerate quantum plasma with two-temperature electrons
TL;DR: Using the Quantum hydrodynamic (QHD) model Korteweg-de Vries (KdV) type solitary excitations of electron-acoustic waves (EAWs) have been examined in a two-electron-populated relativistically degenerate super dense plasma.
Journal ArticleDOI
Dressed electrostatic solitary waves in quantum dusty pair plasmas
TL;DR: In this paper, a Korteweg de Vries evolution equation is obtained using reductive perturbation technique and higher nonlinearity effects are derived by solving the linear inhomogeneous differential equation analytically using Kodama-Taniuti renormalizing method.
Journal ArticleDOI
Solitonic, quasi-periodic and periodic pattern of electron acoustic waves in quantum plasma
TL;DR: In this paper, the nonlinear wave structures of electron acoustic waves (EAWs) in an unmagnetized quantum plasma consisting of cold and hot electrons and ions are investigated.
Journal ArticleDOI
Bifurcations of electron acoustic traveling waves in an unmagnetized quantum plasma with cold and hot electrons
TL;DR: In this paper, a Korteweg-de Vries (KdV) equation for EAWs in an unmagnetized quantum plasma was derived by applying the well known reductive perturbation technique.
Journal ArticleDOI
Positron-Acoustic Shock Waves in a Degenerate Multi-Component Plasma
TL;DR: In this article, a theoretical investigation on the propagation of positron-acoustic shock waves (PASWs) in an unmagnetized, collisionless, dense plasma (containing non-relativistic inertial cold positrons, non-RelATivistic or ultra-relatio-ivistic degenerate electron and hot positron fluids and nonegenerate positively charged immobile ions) is carried out by employing the reductive perturbation method.
References
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Giovanni Manfredi,Fernando Haas +1 more
TL;DR: In this article, the Wigner-Poisson (or Hartree) system can be reduced to an effective Schroedinger Poisson (SGP) system, in which the SGP equation contains a new nonlinearity for a zero-temperature one-dimensional electron gas.
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