W-type ion-acoustic solitary waves in plasma consisting of cold ions and nonthermal electrons

Paul, Indrani; Chandra, Swarniv; Chattopadhyay, Sankar; Paul, S. N.

doi:10.1007/s12648-016-0859-0

Cited by 30 publications

(2 citation statements)

References 29 publications

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“…Such a technique holds good for small perturbations where approximation methods are justified, but this technique often lacks appropriateness and universality. Some authors [15][16][17][18] have used multiple-scale reductive perturbative techniques (RPTs) that are limited in application and fail to address the problem properly. Washimi and Taniuti [19] used RPTs to study the plasma problem.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear interaction of intense laser beam with dense plasma

Das

Chandra²,

Ghosh

2020

Plasma Phys. Control. Fusion

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We studied the nonlinear evolution of an amplitude-modulated envelop soliton formed in a dense plasma when a laser beam interacts with it. The employment of our newly developed technique, homotopy-assisted symbolic simulation, has been instrumental in the study of the nature and formation of envelope solitons and their dependence on various parameters. The different orders of homotopy perturbation generate a convergent series solution for such nonlinear coupled partial differential equations (PDE). Our technique bypasses the rigorous analytical derivation of coupled PDE without a loss of information. The methodology is very novel and holds promise for application in models that explain experimental observations. The results will be beneficial in interpreting various dense laser plasma interactions.

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Section: Introductionmentioning

confidence: 99%

Nonlinear interaction of intense laser beam with dense plasma

Das

Chandra²,

Ghosh

2020

Plasma Phys. Control. Fusion

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“…In the last few years, ion acoustic solitary waves (SWs) and double layers (DLs) have been theoretically studied by various authors considering different parameters in plasma, e.g., ion temperature, two-temperature electrons, positrons, beam ions, and magnetic field. But, the presence of negative ions [1][2][3] and nonthermal electrons [4][5][6][7][8] in plasma is found to be most interesting on the formation of SWs and DLs. It is noted that most of the works are done in an infinite or unbounded plasma.…”

Section: Introductionmentioning

confidence: 99%

Effects of Boundary of Cylindrical Waveguide and Nonthermal Electrons on the Ion Acoustic Double Layers in Multicomponent Bounded Plasma

2020

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Ion acoustic double layers in a multicomponent plasma consisting of positive ions, negative ions, and nonthermal electrons filled in a cylindrical waveguide have been theoretically investigated using pseudopotential technique. The expression of Sagdeev potential for the ion acoustic wave in such a plasma has been derived, and the conditions for the existence of double layers are obtained. The effects of the boundary of cylindrical waveguide and nonthermal electrons on the Sagdeev potential have been graphically discussed. From the nonlinear equation, the solution for double layers of small amplitude ion acoustic waves is obtained, and the structure of double layers is analyzed as function of the plasma parameters. It is seen that finite geometry of bounded plasma, nonthermality of electrons, density of negative ions, and stream velocity of positive and negative ions have significant contribution on the structure of double layers. The double layers may be compressive or rarefactive in plasma depending upon the values of the plasma parameters.

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