نتایج جستجو برای: sagdeev potential

تعداد نتایج: 1067821  

2008
S. Mahmood

Nonlinear set of equations for inertial or slow shear Alfvén wave (SSAW) in ideal electron-positron-ion (e-p-i) plasmas are presented. The analytical solution for arbitrary amplitude SSAW in such multi-component plasmas is obtained using Sagdeev potential approach. The numerical solutions for several different cases have also been presented for illustrative purpose. It is found that the electro...

Journal: :Chinese Journal of Physics 2022

• Ion acoustic solitary waves in the four-component complex plasma with Cairns-Tsallis distribution are studied. Conditions of to exist Numerical analyses for depend on nonextensive and nonthermal parameters made. We study ion consisting cold inertial ions, positrons, hot (two-temperature) electrons, where electrons positrons a have different parameters. Base hydrodynamic equations Sagdeev pseu...

Journal: :Jetp Letters 2022

We present the results of direct numerical simulation three-dimensional acoustic turbulence in medium with weak positive dispersion. It is shown that at beginning long-wavelength region energy distribution k -space, there are formed jets form narrow cones. At larger wavenumbers, cones broaden, and accordingly tends to isotropic. In this angle-averaged spectrum acquires a power-law character, E ...

Journal: :European Physical Journal D 2022

Abstract The formation and main features of the fully nonlinear structure in a six-component dusty plasma system have been investigated using Sagdeev potential approach. By means pseudo-potential technique, fluid equations describing were diminished into single differential equation, called energy equation modified by presenting parameters addition components. For certain values configurational...

Journal: :Contributions To Plasma Physics 2022

The maximum sustainable amplitude, so-called wave breaking limit, of a nonlinear plasma in arbitrary mass ratio warm plasmas is obtained the non-relativistic regime. Using method Sagdeev potential, general formula derived by taking into account dynamics both species having finite temperature. It found that amplitude decreases monotonically with increase temperature β − $$ {\beta}_{-} negative (...

Journal: :Astrophysics and Space Science 2022

Obliquely propagating three-dimensional dust-acoustic periodic travelling waves (DAPTWs) in a magnetized dusty plasma composed of negatively charged inertial dust particles, trapped ions, and nonthermal fast electrons have been undertaken. In the model at hand, dynamic behaviors DAPTWs are governed by Schamel equation. The presence acoustic solitary (DASWs) is investigated via bifurcation analy...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده علوم 1391

abstract in the present research solution of chalcopyrite in sulfuric acid in hydrometallurgy method using electrochemistry with cyclic voltammetry technique has been investigated. the value of maximum reduction peak current of copper ions represents the measure of solubility. in this research different parameters temperature, potential, potential exert time, chalcopyrite concentration, sulfur...

The characteristics of arbitrary amplitude dust ion acoustic solitary waves (DIASWs) are studied in unmagnetized dusty plasmas whose constituents are cold uid ions, nonextensive electrons and stationary negative/positive dust particles. The pseudopotential approach has been used to investigate the structure of localized waves. It is found that, solitary waves exist in a definite interval for th...

Journal: :Symmetry 2021

The propagation of electron-acoustic waves (EAWs) in an unmagnetized plasma, comprising (r,q)-distributed hot electrons, cold inertial and stationary positive ions, is investigated. Both the unmodulated modulated EAWs, such as solitary waves, rogue (RWs), breathers are discussed. Sagdeev potential approach employed to determine existence domain electron acoustic structures study perfectly symme...

Journal: :Journal of Geophysical Research: Space Physics 2020

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